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The Ithaca Climate Page

Normal Jan Feb Mar Apr May Jun JulAug Sep Oct Nov Dec Annual
Max Temperature (°F) 31.3 34.0 42.0 55.5 67.4 76.0 79.9 78.6 71.1 59.0 47.5 35.8 56.5
Min Temperature (°F) 15.4 16.5 23.1 33.9 43.5 53.3 57.7 56.3 49.0 38.3 31.7 21.5 36.7
Avg Temperature (°F) 22.3 25.3 32.6 44.7 55.4 64.6 68.8 67.4 60.0 48.7 39.6 28.7 46.6
HDD (base 65) 1291 1113 1006 612 317 96 30 44 187 510 762 1127 7095
CDD (base 65) 0 0 0 3 20 85 148 120 38 3 0 0 417
Precipitation (inches) 2.08 1.98 2.64 3.29 3.19 3.99 3.83 3.63 3.69 3.42 3.16 2.40 37.30
Snowfall (inches) 17.6 14.2 11.7 3.4 0.0 0.0 0.0 0.0 0.0 0.4 4.5 12.6 64.4

These normals are based on data for the period 1981-2010. Normals are updated every ten years by the National Centers for Environmental Information.