First Frost, Freeze, & Snow Dates: Northeast
Despite the best efforts of summer to hold on into fall, cold weather will inevitably prevail across the area once again. Daylight has been decreasing at a rapid rate over the last month and average temperatures have been falling steadily as well. While parts of the interior Northeast have already seen their first frost at the time of this writing (October 6th), most along the coast (including the big cities) have not.
The first frost brings an end to the growing season when it occurs across an area. This is usually followed by the first freeze, which either occurs simultaneously or shortly thereafter. Beyond that point, it is only a matter of time before the first measurable snowfall occurs. Measurable snowfall is defined as at least 0.1" of snow. The list below shows the average date for the first frost, freeze, and snow for select cities in the Northeast and mid-Atlantic.
Note: Outlying areas and suburbs typically have earlier dates on average.
|First Frost||First Freeze||First Measurable Snow|
|Boston||October 21st||October 31st||November 29th|
|Hartford||October 13th||October 30th||December 3rd|
|New York City||November 18th||December 3rd||December 13th|
|Scranton||October 14th||November 1st||November 20th|
|Philadelphia||November 20th||December 6th||December 19th|
|Baltimore||November 24th||December 10th||December 15th|
|Washington, DC||November 17th||December 3rd||December 20th|