Spring’s Firsts and Lasts
Spring is a season of transition, featuring both winter-like and summerlike conditions. For instance, the last measurable snow (0.1 inches) of the year typically occurs sometime between late February (in Washington, D.C.) and late April (in Caribou). However, measurable snow has stopped falling as early as December 9 and, at the opposite extreme, has continued to fall until May 25.
The last measurable snow typically occurs sometime between late February and late May.
While it’s still a bit too early to plant outside in much of the Northeast, spring also features the last frost. That date usually ranges from late March to mid-May, with most areas seeing their last frost some time in April. However, each year is a little different and the last frost date has occurred as early as late February and as late as early July!
A large portion of the Northeast usually sees their last frost in April.
Another milestone that is usually reached during spring is the first day with a max temperature of 70°F or higher. The average date ranges from early February in southern West Virginia to early May in northern Maine. Some sites have seen a high of at least 70°F as early as January 1 or as late as June 16.
Most of the major climate sites have already hit 70°F this year. For some, this occurred during the unusually mild January. Providence had their first 70°F day on January 12, making it the earliest on record for the site. For others, it occurred within the past 2-3 weeks. Portland reached 70°F on March 9, its earliest date on record.
Providence and Portland recorded their earliest 70°F day on record this year.