First and last freeze/frost dates for Northampton, MA ,United StatesFirst and last freeze/frost dates for:
Detailed station data* follows:
Amherst, MA (Hampshire county):
|Spring 32°||May 24||May 19||May 16||May 13||May 10||May 7||May 4||May 1||Apr 26|
|Spring 28°||May 9||May 6||May 3||May 1||Apr 28||Apr 26||Apr 24||Apr 21||Apr 17|
|Spring 24°||May 4||Apr 28||Apr 24||Apr 20||Apr 17||Apr 13||Apr 10||Apr 5||Mar 31|
|Fall 32°||Sep 17||Sep 21||Sep 23||Sep 26||Sep 28||Sep 30||Oct 2||Oct 5||Oct 9|
|Fall 28°||Sep 27||Oct 3||Oct 7||Oct 10||Oct 13||Oct 16||Oct 20||Oct 24||Oct 29|
|Fall 24°||Oct 7||Oct 13||Oct 17||Oct 21||Oct 24||Oct 27||Oct 31||Nov 3||Nov 8|
Tully Dam, MA (Worcester county):
|Spring 32°||May 20||May 17||May 14||May 12||May 9||May 7||May 5||May 2||Apr 28|
|Spring 28°||May 7||May 3||May 1||Apr 28||Apr 26||Apr 24||Apr 21||Apr 18||Apr 15|
|Spring 24°||Apr 23||Apr 19||Apr 17||Apr 14||Apr 12||Apr 10||Apr 7||Apr 4||Mar 31|
|Fall 32°||Sep 19||Sep 22||Sep 24||Sep 26||Sep 28||Sep 30||Oct 2||Oct 4||Oct 7|
|Fall 28°||Oct 1||Oct 6||Oct 9||Oct 11||Oct 13||Oct 16||Oct 18||Oct 21||Oct 25|
|Fall 24°||Oct 12||Oct 17||Oct 22||Oct 25||Oct 29||Oct 31||Nov 4||Nov 8||Nov 14|
Keene, NH (Cheshire county):
|Spring 32°||May 27||May 22||May 19||May 16||May 13||May 10||May 7||May 4||Apr 29|
|Spring 28°||May 14||May 10||May 7||May 4||May 2||Apr 29||Apr 27||Apr 24||Apr 19|
|Spring 24°||Apr 28||Apr 24||Apr 21||Apr 18||Apr 16||Apr 13||Apr 11||Apr 8||Apr 4|
|Fall 32°||Sep 13||Sep 17||Sep 21||Sep 23||Sep 26||Sep 29||Oct 2||Oct 5||Oct 9|
|Fall 28°||Sep 25||Sep 29||Oct 2||Oct 4||Oct 7||Oct 9||Oct 12||Oct 15||Oct 19|
|Fall 24°||Oct 3||Oct 8||Oct 12||Oct 16||Oct 19||Oct 22||Oct 25||Oct 29||Nov 3|
* This station data is available courtesy the National Climatic Data Center.
For each weather station, you will see a temperature along with tables of data organized into percentage columns. The percentage column tells you the probability that you will experience that row's temperature on or near that date. Here are two examples to help you determine your probable last frost and first freeze dates.
Example 1 (Last Frost). In the Spring 32° row, if you have "Apr 15" under the 50% column, that means you have a 50% chance of seeing frost on or before April 15th.
Example 2 (First Freeze). In the Fall 24° row, if you have "Dec 1" under the 90% column, that means you have a 90% chance of seeing 24 degrees on or after December 1st.
Empty cells indicate you have a less than 10% chance of ever seeing that temperature.