| Data through 2008 | State | Yrs | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BIRMINGHAM C.O. | AL | 11 | 18 | 11 | 5 | 1 | 0 | 0 | 0 | 0 | 0 | * | 4 | 14 | 52 |
| BIRMINGHAM AP | AL | 45 | 16 | 12 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 14 | 55 |
| HUNTSVILLE | AL | 41 | 18 | 13 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 16 | 62 |
| MOBILE | AL | 46 | 8 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 22 |
| MONTGOMERY | AL | 45 | 13 | 8 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 11 | 39 |
| ANCHORAGE | AK | 44 | 30 | 27 | 28 | 20 | 2 | 0 | 0 | 0 | 3 | 20 | 28 | 30 | 191 |
| ANNETTE | AK | 48 | 16 | 13 | 11 | 3 | 4 | 0 | 0 | 0 | 0 | 2 | 10 | 14 | 71 |
| BARROW | AK | 88 | 31 | 28 | 31 | 29 | 30 | 23 | 13 | 14 | 24 | 30 | 30 | 31 | 320 |
| BARTER IS. | AK | 41 | 31 | 28 | 31 | 30 | 31 | 23 | 9 | 11 | 25 | 31 | 30 | 31 | 310 |
| BETHEL | AK | 50 | 30 | 27 | 30 | 27 | 15 | 0 | 1 | 1 | 6 | 26 | 28 | 30 | 222 |
| BETTLES | AK | 56 | 31 | 28 | 30 | 28 | 13 | 14 | 14 | 2 | 15 | 30 | 30 | 31 | 240 |
| BIG DELTA | AK | 63 | 30 | 28 | 30 | 25 | 7 | 8 | 8 | 1 | 10 | 28 | 30 | 31 | 222 |
| COLD BAY | AK | 65 | 24 | 23 | 25 | 21 | 8 | 9 | 0 | 0 | 0 | 9 | 19 | 24 | 154 |
| FAIRBANKS | AK | 45 | 30 | 28 | 30 | 26 | 6 | 0 | 0 | 0 | 9 | 28 | 30 | 31 | 222 |
| GULKANA | AK | 60 | 30 | 27 | 30 | 28 | 14 | 1 | 1 | 3 | 14 | 27 | 30 | 31 | 238 |
| HOMER | AK | 67 | 28 | 24 | 27 | 21 | 8 | 8 | 0 | 0 | 4 | 17 | 25 | 28 | 184 |
| JUNEAU | AK | 64 | 25 | 22 | 22 | 14 | 3 | 3 | 0 | 0 | 1 | 8 | 18 | 23 | 137 |
| KING SALMON | AK | 45 | 28 | 25 | 27 | 24 | 11 | 11 | 0 | 0 | 6 | 21 | 25 | 28 | 197 |
| KODIAK | AK | 46 | 21 | 20 | 21 | 13 | 3 | 3 | 0 | 0 | 1 | 12 | 19 | 22 | 135 |
| KOTZEBUE | AK | 65 | 30 | 28 | 30 | 29 | 24 | 6 | 6 | 6 | 7 | 28 | 30 | 31 | 247 |
| MCGRATH | AK | 66 | 30 | 28 | 30 | 27 | 10 | 11 | 0 | 1 | 10 | 28 | 30 | 31 | 228 |
| NOME | AK | 42 | 30 | 28 | 30 | 28 | 18 | 2 | 3 | 1 | 10 | 25 | 29 | 31 | 237 |
| ST. PAUL ISLAND | AK | 91 | 26 | 26 | 29 | 26 | 18 | 3 | 3 | 3 | 2 | 11 | 19 | 25 | 186 |
| TALKEETNA | AK | 68 | 30 | 27 | 30 | 27 | 12 | 12 | 0 | 1 | 8 | 25 | 29 | 31 | 221 |
| UNALAKLEET | AK | 30 | 31 | 28 | 31 | 29 | 18 | 2 | * | 1 | 8 | 27 | 30 | 31 | 236 |
| VALDEZ | AK | 36 | 29 | 26 | 28 | 16 | 0 | 1 | 0 | 0 | 1 | 12 | 27 | 30 | 172 |
| YAKUTAT | AK | 44 | 25 | 23 | 24 | 19 | 7 | 8 | 0 | 0 | 5 | 11 | 22 | 24 | 162 |
| FLAGSTAFF | AZ | 59 | 30 | 27 | 29 | 24 | 13 | 2 | 3 | 3 | 3 | 19 | 28 | 30 | 208 |
| PHOENIX | AZ | 48 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
| TUCSON | AZ | 68 | 5 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 17 |
| WINSLOW | AZ | 48 | 28 | 23 | 18 | 8 | 1 | 0 | 0 | 0 | 0 | 5 | 21 | 28 | 134 |
| YUMA | AZ | 31 | 1 | * | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| FORT SMITH | AR | 44 | 22 | 15 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 18 | 73 |
| LITTLE ROCK | AR | 48 | 18 | 12 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 15 | 56 |
| NORTH LITTLE ROCK | AR | 30 | 16 | 10 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 12 | 45 |
| BAKERSFIELD | CA | 45 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 11 |
| BISHOP | CA | 60 | 29 | 24 | 19 | 8 | 1 | 1 | 0 | 0 | 0 | 6 | 24 | 29 | 142 |
| BLUE CANYON | CA | 60 | 17 | 16 | 17 | 11 | 3 | 4 | 0 | 0 | 0 | 2 | 10 | 15 | 94 |
| EUREKA | CA | 98 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| FRESNO | CA | 45 | 6 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 7 | 19 |
| LONG BEACH | CA | 48 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| LOS ANGELES AP | CA | 49 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| LOS ANGELES C.O. | CA | 67 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| MOUNT SHASTA | CA | 42 | 26 | 21 | 22 | 14 | 4 | * | * | 0 | 1 | 6 | 18 | 25 | 136 |
| REDDING | CA | 22 | 9 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 11 | 31 |
| SACRAMENTO | CA | 58 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 16 |
| SAN DIEGO | CA | 48 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| SAN FRANCISCO AP | CA | 49 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| SAN FRANCISCO C.O. | CA | 71 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| SANTA BARBARA | CA | 72 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 7 |
| SANTA MARIA | CA | 45 | 4 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 5 | 16 |
| STOCKTON | CA | 49 | 7 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 8 | 21 |
| ALAMOSA | CO | 63 | 30 | 28 | 30 | 26 | 13 | 2 | 0 | 0 | 8 | 26 | 30 | 31 | 227 |
| COLORADO SPRINGS | CO | 48 | 29 | 26 | 25 | 13 | 2 | 0 | 0 | 0 | 0 | 8 | 24 | 29 | 161 |
| DENVER | CO | 40 | 29 | 26 | 24 | 11 | 1 | 0 | 0 | 0 | 0 | 8 | 24 | 29 | 156 |
| GRAND JUNCTION | CO | 45 | 30 | 24 | 16 | 6 | 6 | 0 | 0 | 0 | 0 | 3 | 21 | 30 | 133 |
| PUEBLO | CO | 43 | 30 | 26 | 24 | 10 | 1 | 0 | 0 | 0 | 0 | 11 | 26 | 30 | 162 |
| BRIDGEPORT | CT | 43 | 25 | 23 | 16 | 3 | 3 | 0 | 0 | 0 | 0 | 1 | 8 | 21 | 98 |
| HARTFORD | CT | 49 | 28 | 25 | 21 | 7 | 0 | 0 | 0 | 0 | 0 | 6 | 16 | 27 | 132 |
| WILMINGTON | DE | 61 | 24 | 21 | 14 | 2 | 3 | 0 | 0 | 0 | 0 | 1 | 10 | 22 | 98 |
| WASHINGTON DULLES AP | DC | 46 | 25 | 22 | 16 | 5 | 5 | 0 | 0 | 0 | 0 | 5 | 14 | 23 | 112 |
| WASHINGTON NAT'L AP | DC | 48 | 21 | 17 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 16 | 68 |
| APALACHICOLA | FL | 42 | 3 | 1 | * | 0 | 0 | 0 | 0 | 0 | 0 | 0 | * | 2 | 6 |
| DAYTONA BEACH | FL | 65 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
| FORT MYERS | FL | 65 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| GAINESVILLE | FL | 25 | 5 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 15 |
| JACKSONVILLE | FL | 67 | 5 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 15 |
| KEY WEST | FL | 60 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| MIAMI | FL | 44 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| ORLANDO | FL | 45 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| PENSACOLA | FL | 45 | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 15 |
| TALLAHASSEE | FL | 47 | 10 | 7 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 9 | 33 |
| TAMPA | FL | 45 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| VERO BEACH | FL | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| WEST PALM BEACH | FL | 44 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| ATHENS | GA | 65 | 14 | 10 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 14 | 50 |
| ATLANTA | GA | 48 | 15 | 10 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 12 | 48 |
| AUGUSTA | GA | 44 | 15 | 12 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 13 | 55 |
| COLUMBUS | GA | 63 | 12 | 8 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 11 | 39 |
| MACON | GA | 44 | 13 | 9 | 3 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 12 | 44 |
| SAVANNAH | GA | 44 | 9 | 6 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 8 | 27 |
| HILO | HI | 63 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| HONOLULU | HI | 39 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| KAHULUI | HI | 44 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| LIHUE | HI | 59 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BOISE | ID | 69 | 26 | 20 | 16 | 7 | 1 | 2 | 0 | 0 | 0 | 5 | 18 | 25 | 121 |
| LEWISTON | ID | 62 | 20 | 15 | 11 | 3 | 3 | 0 | 0 | 0 | 0 | 3 | 12 | 20 | 86 |
| POCATELLO | ID | 45 | 28 | 25 | 24 | 15 | 4 | 4 | 0 | 0 | 3 | 15 | 24 | 28 | 168 |
| CAIRO | IL | 47 | 22 | 15 | 8 | * | 0 | 0 | 0 | 0 | 0 | * | 7 | 17 | 69 |
| CHICAGO | IL | 50 | 28 | 24 | 21 | 7 | 0 | 0 | 0 | 0 | 0 | 5 | 16 | 26 | 129 |
| MOLINE | IL | 48 | 29 | 25 | 20 | 6 | 0 | 0 | 0 | 0 | 0 | 6 | 18 | 27 | 133 |
| PEORIA | IL | 49 | 28 | 25 | 19 | 5 | 5 | 0 | 0 | 0 | 0 | 4 | 16 | 26 | 125 |
| ROCKFORD | IL | 45 | 29 | 26 | 22 | 8 | 1 | 0 | 0 | 0 | 0 | 6 | 19 | 27 | 142 |
| SPRINGFIELD | IL | 49 | 27 | 23 | 16 | 4 | 4 | 0 | 0 | 0 | 0 | 4 | 14 | 25 | 115 |
| EVANSVILLE | IN | 47 | 24 | 20 | 13 | 2 | 3 | 0 | 0 | 0 | 0 | 3 | 12 | 21 | 96 |
| FORT WAYNE | IN | 47 | 28 | 24 | 20 | 8 | 0 | 0 | 0 | 0 | 0 | 5 | 16 | 26 | 128 |
| INDIANAPOLIS | IN | 49 | 26 | 23 | 16 | 4 | 5 | 0 | 0 | 0 | 0 | 4 | 14 | 24 | 113 |
| SOUTH BEND | IN | 45 | 27 | 24 | 20 | 8 | 0 | 0 | 0 | 0 | 0 | 3 | 14 | 25 | 124 |
| DES MOINES | IA | 47 | 29 | 25 | 20 | 6 | 6 | 0 | 0 | 0 | 0 | 5 | 18 | 28 | 133 |
| DUBUQUE | IA | 41 | 30 | 26 | 23 | 8 | 0 | 0 | 0 | 0 | 0 | 6 | 20 | 29 | 146 |
| SIOUX CITY | IA | 49 | 30 | 26 | 23 | 8 | 0 | 0 | 0 | 0 | 0 | 7 | 23 | 30 | 152 |
| WATERLOO | IA | 49 | 30 | 26 | 24 | 10 | 1 | 0 | 0 | 0 | 0 | 9 | 22 | 29 | 155 |
| CONCORDIA | KS | 46 | 28 | 23 | 18 | 4 | 5 | 0 | 0 | 0 | 0 | 3 | 17 | 28 | 124 |
| DODGE CITY | KS | 45 | 29 | 23 | 17 | 5 | 5 | 0 | 0 | 0 | 0 | 3 | 17 | 28 | 125 |
| GOODLAND | KS | 42 | 30 | 26 | 23 | 11 | 1 | 0 | 0 | 0 | 0 | 7 | 23 | 29 | 156 |
| TOPEKA | KS | 44 | 28 | 22 | 15 | 3 | 4 | 0 | 0 | 0 | 0 | 4 | 16 | 27 | 117 |
| WICHITA | KS | 55 | 28 | 22 | 14 | 2 | 3 | 0 | 0 | 0 | 0 | 1 | 14 | 26 | 108 |
| GREATER CINCINNATI AP | KY | 46 | 25 | 22 | 15 | 4 | 4 | 0 | 0 | 0 | 0 | 3 | 13 | 22 | 105 |
| JACKSON | KY | 28 | 21 | 17 | 11 | 2 | 2 | 0 | 0 | 0 | 0 | 1 | 8 | 18 | 80 |
| LEXINGTON | KY | 45 | 23 | 20 | 13 | 3 | 3 | 0 | 0 | 0 | 0 | 2 | 11 | 20 | 93 |
| LOUISVILLE | KY | 48 | 23 | 18 | 11 | 1 | 2 | 0 | 0 | 0 | 0 | 1 | 9 | 20 | 85 |
| PADUCAH | KY | 25 | 22 | 17 | 10 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 10 | 19 | 85 |
| BATON ROUGE | LA | 49 | 8 | 4 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 6 | 22 |
| LAKE CHARLES | LA | 44 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 13 |
| NEW ORLEANS | LA | 62 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 11 |
| SHREVEPORT | LA | 56 | 11 | 6 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 10 | 34 |
| CARIBOU | ME | 69 | 30 | 27 | 29 | 21 | 5 | 5 | 0 | 0 | 3 | 14 | 25 | 30 | 186 |
| PORTLAND | ME | 68 | 29 | 26 | 25 | 13 | 2 | 0 | 0 | 0 | 0 | 8 | 19 | 28 | 154 |
| BALTIMORE | MD | 58 | 24 | 21 | 14 | 2 | 3 | 0 | 0 | 0 | 0 | 2 | 11 | 21 | 97 |
| BLUE HILL | MA | 123 | 28 | 26 | 23 | 8 | 9 | 0 | 0 | 0 | 0 | 3 | 14 | 26 | 129 |
| BOSTON | MA | 44 | 25 | 22 | 16 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 21 | 96 |
| WORCESTER | MA | 53 | 29 | 26 | 24 | 10 | 0 | 0 | 0 | 0 | 0 | 5 | 16 | 27 | 139 |
| ALPENA | MI | 49 | 30 | 27 | 28 | 18 | 6 | 0 | 0 | 0 | 2 | 11 | 22 | 29 | 175 |
| DETROIT | MI | 50 | 28 | 25 | 22 | 8 | 0 | 0 | 0 | 0 | 0 | 4 | 16 | 26 | 131 |
| FLINT | MI | 45 | 28 | 25 | 23 | 10 | 1 | 0 | 0 | 0 | 0 | 6 | 17 | 27 | 140 |
| GRAND RAPIDS | MI | 45 | 28 | 26 | 23 | 11 | 1 | 0 | 0 | 0 | 0 | 6 | 17 | 28 | 142 |
| HOUGHTON LAKE | MI | 44 | 30 | 27 | 27 | 17 | 4 | 5 | 0 | 0 | 2 | 10 | 22 | 30 | 170 |
| LANSING | MI | 45 | 28 | 26 | 24 | 12 | 2 | 2 | 0 | 0 | 1 | 8 | 18 | 27 | 148 |
| MARQUETTE | MI | 30 | 30 | 27 | 28 | 21 | 7 | 0 | 0 | 0 | 1 | 15 | 26 | 30 | 192 |
| MUSKEGON | MI | 48 | 28 | 26 | 23 | 10 | 1 | 2 | 0 | 0 | 0 | 5 | 15 | 26 | 138 |
| SAULT STE. MARIE | MI | 67 | 30 | 27 | 28 | 20 | 6 | 0 | 0 | 0 | 2 | 9 | 22 | 30 | 177 |
| DULUTH | MN | 47 | 30 | 27 | 28 | 19 | 4 | 5 | 0 | 0 | 2 | 12 | 26 | 31 | 183 |
| INTERNATIONAL FALLS | MN | 69 | 30 | 28 | 29 | 21 | 7 | 7 | 0 | 0 | 4 | 16 | 28 | 31 | 198 |
| MINNEAPOLIS-ST.PAUL | MN | 49 | 30 | 27 | 25 | 10 | 0 | 0 | 0 | 0 | 0 | 7 | 22 | 29 | 154 |
| ROCHESTER | MN | 48 | 30 | 27 | 25 | 12 | 1 | 0 | 0 | 0 | 0 | 9 | 23 | 30 | 162 |
| SAINT CLOUD | MN | 68 | 30 | 27 | 27 | 16 | 3 | 3 | 0 | 0 | 2 | 12 | 26 | 31 | 177 |
| JACKSON | MS | 45 | 13 | 10 | 3 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 13 | 46 |
| MERIDIAN | MS | 44 | 15 | 10 | 4 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 13 | 51 |
| TUPELO | MS | 25 | 16 | 10 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 15 | 54 |
| COLUMBIA | MO | 39 | 26 | 21 | 14 | 3 | 3 | 0 | 0 | 0 | 0 | 2 | 13 | 24 | 106 |
| KANSAS CITY | MO | 36 | 27 | 21 | 14 | 3 | 4 | 0 | 0 | 0 | 0 | 2 | 13 | 26 | 108 |
| ST. LOUIS | MO | 48 | 25 | 20 | 12 | 2 | 2 | 0 | 0 | 0 | 0 | 1 | 10 | 22 | 95 |
| SPRINGFIELD | MO | 48 | 25 | 20 | 13 | 3 | 3 | 0 | 0 | 0 | 0 | 2 | 12 | 23 | 99 |
| BILLINGS | MT | 49 | 27 | 23 | 22 | 12 | 1 | 2 | 0 | 0 | 1 | 8 | 22 | 28 | 147 |
| GLASGOW | MT | 44 | 30 | 27 | 28 | 15 | 3 | 0 | 0 | 0 | 1 | 13 | 27 | 30 | 179 |
| GREAT FALLS | MT | 47 | 26 | 24 | 25 | 16 | 4 | 5 | 0 | 0 | 3 | 12 | 22 | 26 | 161 |
| HELENA | MT | 45 | 29 | 26 | 26 | 16 | 3 | 4 | 0 | 0 | 3 | 16 | 27 | 30 | 179 |
| KALISPELL | MT | 49 | 29 | 26 | 27 | 18 | 6 | 0 | 1 | 1 | 6 | 21 | 25 | 29 | 189 |
| MISSOULA | MT | 48 | 29 | 26 | 25 | 16 | 5 | 5 | 5 | 5 | 4 | 17 | 26 | 30 | 180 |
| GRAND ISLAND | NE | 47 | 30 | 26 | 22 | 7 | 0 | 0 | 0 | 0 | 0 | 6 | 22 | 30 | 147 |
| LINCOLN | NE | 37 | 30 | 25 | 21 | 7 | 0 | 0 | 0 | 0 | 0 | 6 | 21 | 29 | 144 |
| NORFOLK | NE | 63 | 30 | 26 | 23 | 9 | 0 | 0 | 0 | 0 | 0 | 7 | 23 | 30 | 154 |
| NORTH PLATTE | NE | 44 | 30 | 27 | 26 | 13 | 2 | 2 | 0 | 0 | 2 | 14 | 28 | 31 | 176 |
| OMAHA EPPLEY AP | NE | 44 | 29 | 25 | 21 | 6 | 7 | 0 | 0 | 0 | 0 | 6 | 20 | 29 | 139 |
| OMAHA (NORTH) | NE | 39 | 30 | 26 | 21 | 7 | * | 0 | 0 | 0 | * | 4 | 19 | 29 | 137 |
| SCOTTSBLUFF | NE | 44 | 30 | 27 | 26 | 14 | 2 | 2 | 0 | 0 | 1 | 13 | 27 | 30 | 173 |
| VALENTINE | NE | 53 | 30 | 27 | 26 | 14 | 2 | 3 | 0 | 0 | 2 | 13 | 27 | 31 | 176 |
| ELKO | NV | 44 | 29 | 26 | 26 | 19 | 7 | 1 | 1 | 1 | 7 | 22 | 26 | 29 | 194 |
| ELY | NV | 70 | 30 | 27 | 29 | 24 | 13 | 3 | 3 | 0 | 8 | 23 | 28 | 30 | 218 |
| LAS VEGAS | NV | 48 | 9 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 10 | 25 |
| RENO | NV | 45 | 27 | 23 | 20 | 14 | 3 | 0 | 0 | 0 | 3 | 13 | 23 | 28 | 158 |
| WINNEMUCCA | NV | 59 | 28 | 24 | 25 | 19 | 7 | 1 | 1 | 1 | 6 | 21 | 25 | 28 | 186 |
| CONCORD | NH | 43 | 30 | 27 | 26 | 16 | 4 | 5 | 0 | 0 | 2 | 14 | 21 | 29 | 171 |
| MT. WASHINGTON | NH | 76 | 30 | 28 | 30 | 28 | 19 | 6 | 1 | 2 | 11 | 23 | 28 | 30 | 242 |
| ATLANTIC CITY AP | NJ | 44 | 24 | 22 | 17 | 6 | 6 | 0 | 0 | 0 | 0 | 3 | 13 | 22 | 108 |
| ATLANTIC CITY C.O. | NJ | 46 | 20 | 17 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 15 | 68 |
| NEWARK | NJ | 43 | 23 | 20 | 12 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 18 | 83 |
| ALBUQUERQUE | NM | 48 | 27 | 20 | 13 | 3 | 3 | 0 | 0 | 0 | 0 | 2 | 15 | 28 | 110 |
| CLAYTON | NM | 60 | 28 | 24 | 21 | 8 | 0 | 0 | 0 | 0 | 0 | 5 | 20 | 28 | 138 |
| ROSWELL | NM | 36 | 24 | 16 | 7 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 24 | 88 |
| ALBANY | NY | 43 | 28 | 25 | 24 | 11 | 1 | 0 | 0 | 0 | 0 | 7 | 17 | 27 | 145 |
| BINGHAMTON | NY | 57 | 29 | 26 | 24 | 11 | 1 | 0 | 0 | 0 | 0 | 6 | 18 | 27 | 145 |
| BUFFALO | NY | 48 | 27 | 25 | 23 | 10 | 0 | 0 | 0 | 0 | 0 | 3 | 14 | 25 | 130 |
| ISLIP | NY | 25 | 24 | 22 | 17 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 9 | 21 | 100 |
| NEW YORK C.PARK | NY | 95 | 22 | 19 | 12 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 5 | 18 | 77 |
| NEW YORK (JFK AP) | NY | 47 | 22 | 20 | 11 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 17 | 78 |
| NEW YORK (LAGUARDIA AP) | NY | 46 | 21 | 19 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 15 | 70 |
| ROCHESTER | NY | 45 | 27 | 25 | 23 | 10 | 0 | 0 | 0 | 0 | 0 | 4 | 15 | 26 | 133 |
| SYRACUSE | NY | 45 | 28 | 25 | 23 | 11 | 0 | 0 | 0 | 0 | 0 | 5 | 15 | 26 | 135 |
| ASHEVILLE | NC | 44 | 22 | 19 | 12 | 3 | 4 | 0 | 0 | 0 | 0 | 4 | 13 | 21 | 97 |
| CAPE HATTERAS | NC | 51 | 9 | 7 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 26 |
| CHARLOTTE | NC | 48 | 17 | 14 | 6 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 6 | 16 | 63 |
| GREENSBORO-WNSTN-SALM-HGHPT | NC | 45 | 21 | 17 | 9 | 1 | 2 | 0 | 0 | 0 | 0 | 1 | 9 | 19 | 79 |
| RALEIGH | NC | 44 | 19 | 16 | 9 | 1 | 2 | 0 | 0 | 0 | 0 | 1 | 9 | 17 | 74 |
| WILMINGTON | NC | 45 | 13 | 9 | 3 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 11 | 40 |
| BISMARCK | ND | 49 | 30 | 28 | 28 | 17 | 4 | 4 | 0 | 0 | 3 | 15 | 28 | 31 | 186 |
| FARGO | ND | 49 | 30 | 27 | 27 | 16 | 3 | 4 | 0 | 0 | 2 | 13 | 27 | 31 | 178 |
| WILLISTON | ND | 47 | 30 | 27 | 28 | 18 | 4 | 5 | 0 | 0 | 3 | 16 | 29 | 31 | 189 |
| AKRON | OH | 45 | 27 | 24 | 20 | 8 | 0 | 1 | 0 | 0 | 0 | 4 | 14 | 25 | 125 |
| CLEVELAND | OH | 48 | 27 | 24 | 20 | 8 | 0 | 1 | 0 | 0 | 0 | 2 | 12 | 24 | 120 |
| COLUMBUS | OH | 49 | 26 | 23 | 18 | 5 | 0 | 0 | 0 | 0 | 0 | 3 | 13 | 23 | 114 |
| DAYTON | OH | 45 | 26 | 23 | 18 | 5 | 6 | 0 | 0 | 0 | 0 | 3 | 14 | 24 | 115 |
| MANSFIELD | OH | 43 | 27 | 24 | 20 | 8 | 0 | 0 | 0 | 0 | 0 | 4 | 14 | 25 | 127 |
| TOLEDO | OH | 53 | 28 | 25 | 22 | 9 | 1 | 1 | 0 | 0 | 0 | 6 | 17 | 26 | 136 |
| YOUNGSTOWN | OH | 65 | 27 | 24 | 22 | 10 | 1 | 1 | 0 | 0 | 0 | 4 | 16 | 26 | 133 |
| OKLAHOMA CITY | OK | 43 | 22 | 15 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 19 | 74 |
| TULSA | OK | 48 | 22 | 16 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 19 | 75 |
| ASTORIA | OR | 55 | 8 | 6 | 5 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 4 | 7 | 34 |
| BURNS | OR | 24 | 29 | 26 | 27 | 20 | 8 | 2 | 3 | 1 | 8 | 24 | 27 | 30 | 206 |
| EUGENE | OR | 66 | 13 | 9 | 6 | 2 | 2 | 2 | 0 | 0 | 0 | 2 | 7 | 11 | 53 |
| MEDFORD | OR | 47 | 18 | 13 | 10 | 4 | 0 | 0 | 0 | 0 | 0 | 3 | 10 | 16 | 78 |
| PENDLETON | OR | 73 | 20 | 16 | 9 | 2 | 3 | 0 | 0 | 0 | 0 | 3 | 12 | 20 | 85 |
| PORTLAND | OR | 68 | 11 | 7 | 4 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 5 | 9 | 40 |
| SALEM | OR | 46 | 13 | 11 | 8 | 4 | 0 | 1 | 0 | 0 | 0 | 3 | 7 | 12 | 60 |
| SEXTON SUMMIT | OR | 46 | 18 | 15 | 19 | 14 | 6 | 6 | 0 | 0 | 0 | 3 | 11 | 17 | 105 |
| GUAM | PC | 49 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| JOHNSTON ISLAND | PC | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| KOROR | PC | 57 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| KWAJALEIN | PC | 56 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| MAJURO | PC | 54 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| PAGO PAGO | PC | 49 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| POHNPEI | PC | 57 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CHUUK | PC | 57 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| WAKE ISLAND | PC | 50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| YAP | PC | 60 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| ALLENTOWN | PA | 65 | 27 | 24 | 20 | 6 | 6 | 0 | 0 | 0 | 0 | 4 | 14 | 26 | 123 |
| ERIE | PA | 43 | 27 | 24 | 22 | 10 | 0 | 1 | 0 | 0 | 0 | 1 | 11 | 24 | 121 |
| HARRISBURG | PA | 37 | 26 | 23 | 17 | 4 | * | 0 | 0 | 0 | * | 2 | 11 | 23 | 106 |
| MIDDLETOWN/HARRISBURG | PA | 70 | 26 | 23 | 16 | 3 | 3 | 0 | 0 | 0 | 0 | 2 | 11 | 23 | 105 |
| PHILADELPHIA | PA | 49 | 24 | 21 | 13 | 1 | 2 | 0 | 0 | 0 | 0 | 1 | 8 | 20 | 91 |
| PITTSBURGH | PA | 49 | 26 | 23 | 19 | 7 | 0 | 0 | 0 | 0 | 0 | 3 | 13 | 24 | 120 |
| AVOCA | PA | 53 | 27 | 24 | 21 | 8 | 0 | 0 | 0 | 0 | 0 | 4 | 14 | 25 | 127 |
| WILLIAMSPORT | PA | 64 | 27 | 24 | 21 | 7 | 0 | 0 | 0 | 0 | 0 | 4 | 15 | 26 | 127 |
| BLOCK IS. | RI | 39 | 24 | 21 | 16 | 3 | 0 | 0 | 0 | 0 | 0 | * | 5 | 17 | 86 |
| PROVIDENCE | RI | 45 | 27 | 24 | 19 | 5 | 5 | 0 | 0 | 0 | 0 | 3 | 12 | 24 | 116 |
| CHARLESTON AP | SC | 66 | 10 | 6 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 9 | 31 |
| CHARLESTON C.O. | SC | 33 | 4 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 8 |
| COLUMBIA | SC | 42 | 15 | 12 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 13 | 56 |
| GREENVILLE-SPARTANBURG AP | SC | 46 | 17 | 13 | 6 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 7 | 16 | 62 |
| ABERDEEN | SD | 47 | 30 | 27 | 27 | 15 | 2 | 0 | 0 | 0 | 2 | 14 | 27 | 31 | 179 |
| HURON | SD | 49 | 30 | 27 | 25 | 13 | 2 | 2 | 0 | 0 | 1 | 12 | 26 | 31 | 170 |
| RAPID CITY | SD | 66 | 30 | 26 | 26 | 15 | 2 | 3 | 0 | 0 | 2 | 11 | 25 | 30 | 169 |
| SIOUX FALLS | SD | 45 | 30 | 27 | 25 | 12 | 1 | 0 | 0 | 0 | 1 | 11 | 25 | 30 | 167 |
| BRISTOL-JHNSN CTY-KNGSPRT | TN | 47 | 22 | 19 | 13 | 3 | 4 | 0 | 0 | 0 | 0 | 3 | 13 | 21 | 96 |
| CHATTANOOGA | TN | 68 | 18 | 14 | 8 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 17 | 70 |
| KNOXVILLE | TN | 48 | 19 | 15 | 8 | 1 | 2 | 0 | 0 | 0 | 0 | 1 | 8 | 18 | 72 |
| MEMPHIS | TN | 67 | 17 | 11 | 4 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 14 | 53 |
| NASHVILLE | TN | 43 | 20 | 16 | 8 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 17 | 73 |
| OAK RIDGE | TN | 43 | 20 | 17 | 11 | 2 | 3 | 0 | 0 | 0 | 0 | 2 | 12 | 20 | 85 |
| ABILENE | TX | 45 | 16 | 10 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 14 | 50 |
| AMARILLO | TX | 47 | 27 | 21 | 14 | 3 | 4 | 0 | 0 | 0 | 0 | 2 | 15 | 27 | 110 |
| AUSTIN | TX | 46 | 7 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 18 |
| BROWNSVILLE | TX | 42 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| CORPUS CHRISTI | TX | 44 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
| DALLAS-FORT WORTH | TX | 45 | 13 | 7 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 10 | 36 |
| DEL RIO | TX | 45 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 15 |
| EL PASO | TX | 48 | 17 | 10 | 4 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 7 | 18 | 57 |
| GALVESTON | TX | 42 | 2 | 1 | * | 0 | 0 | 0 | 0 | 0 | 0 | 0 | * | 1 | 3 |
| HOUSTON | TX | 39 | 5 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 16 |
| LUBBOCK | TX | 61 | 25 | 18 | 10 | 1 | 2 | 0 | 0 | 0 | 0 | 1 | 11 | 23 | 91 |
| MIDLAND-ODESSA | TX | 45 | 19 | 12 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 18 | 62 |
| PORT ARTHUR | TX | 48 | 5 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 13 |
| SAN ANGELO | TX | 48 | 16 | 10 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 14 | 51 |
| SAN ANTONIO | TX | 66 | 7 | 4 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 6 | 21 |
| VICTORIA | TX | 47 | 4 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 10 |
| WACO | TX | 45 | 12 | 6 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 9 | 33 |
| WICHITA FALLS | TX | 48 | 20 | 13 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 17 | 63 |
| MILFORD | UT | 39 | 30 | 26 | 27 | 18 | 6 | 1 | 0 | 0 | 3 | 15 | 26 | 30 | 180 |
| SALT LAKE CITY | UT | 49 | 27 | 22 | 15 | 5 | 0 | 0 | 0 | 0 | 0 | 4 | 18 | 27 | 121 |
| BURLINGTON | VT | 44 | 29 | 26 | 25 | 14 | 2 | 0 | 0 | 0 | 0 | 8 | 18 | 27 | 153 |
| LYNCHBURG | VA | 45 | 22 | 20 | 12 | 2 | 3 | 0 | 0 | 0 | 0 | 3 | 11 | 20 | 92 |
| NORFOLK | VA | 60 | 15 | 13 | 5 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 13 | 50 |
| RICHMOND | VA | 79 | 21 | 18 | 10 | 1 | 2 | 0 | 0 | 0 | 0 | 2 | 10 | 20 | 83 |
| ROANOKE | VA | 44 | 22 | 19 | 11 | 2 | 2 | 0 | 0 | 0 | 0 | 2 | 10 | 20 | 87 |
| WALLOPS ISLAND | VA | 34 | 20 | 17 | 9 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 17 | 72 |
| OLYMPIA | WA | 49 | 14 | 13 | 13 | 7 | 1 | 2 | 0 | 0 | 1 | 5 | 10 | 15 | 83 |
| QUILLAYUTE | WA | 42 | 12 | 10 | 9 | 5 | 5 | 0 | 0 | 0 | 0 | 3 | 7 | 12 | 60 |
| SEATTLE C.O. | WA | 48 | 7 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | * | 2 | 5 | 19 |
| SEATTLE SEA-TAC AP | WA | 49 | 8 | 5 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 8 | 29 |
| SPOKANE | WA | 49 | 26 | 22 | 20 | 10 | 1 | 0 | 0 | 0 | 0 | 9 | 19 | 26 | 139 |
| WALLA WALLA | WA | 43 | 19 | 14 | 6 | 0 | 0 | 0 | 0 | 0 | * | 2 | 9 | 22 | 73 |
| YAKIMA | WA | 62 | 28 | 23 | 20 | 12 | 2 | 3 | 0 | 0 | 1 | 11 | 22 | 28 | 150 |
| SAN JUAN | PR | 53 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BECKLEY | WV | 45 | 24 | 21 | 16 | 6 | 0 | 1 | 0 | 0 | 0 | 5 | 14 | 22 | 112 |
| CHARLESTON | WV | 61 | 22 | 19 | 14 | 4 | 4 | 0 | 0 | 0 | 0 | 3 | 13 | 21 | 99 |
| ELKINS | WV | 64 | 26 | 23 | 21 | 11 | 2 | 3 | 3 | 0 | 1 | 10 | 20 | 26 | 143 |
| HUNTINGTON | WV | 47 | 23 | 20 | 13 | 3 | 3 | 0 | 0 | 0 | 0 | 3 | 11 | 20 | 94 |
| GREEN BAY | WI | 47 | 30 | 27 | 26 | 13 | 2 | 0 | 0 | 0 | 0 | 8 | 21 | 29 | 159 |
| LA CROSSE | WI | 56 | 30 | 26 | 25 | 9 | 0 | 0 | 0 | 0 | 0 | 6 | 21 | 29 | 148 |
| MADISON | WI | 49 | 29 | 27 | 25 | 12 | 2 | 3 | 0 | 0 | 1 | 9 | 21 | 29 | 158 |
| MILWAUKEE | WI | 48 | 29 | 25 | 22 | 8 | 0 | 0 | 0 | 0 | 0 | 3 | 17 | 27 | 135 |
| CASPER | WY | 44 | 29 | 26 | 26 | 19 | 7 | 7 | 7 | 0 | 4 | 16 | 25 | 29 | 182 |
| CHEYENNE | WY | 49 | 28 | 26 | 26 | 17 | 3 | 0 | 0 | 0 | 1 | 12 | 24 | 28 | 171 |
| LANDER | WY | 62 | 30 | 27 | 27 | 17 | 4 | 5 | 0 | 0 | 3 | 14 | 28 | 31 | 183 |
| SHERIDAN | WY | 44 | 30 | 27 | 27 | 18 | 5 | 5 | 0 | 0 | 3 | 16 | 28 | 30 | 185 |
| Click on any column header to sort lowest to highest; click again to sort highest to lowest | |||||||||||||||
| Asterisks (*) denote average frequency of occurrence greater than zero, but smaller than one half. | |||||||||||||||