Belchertown, MA: frost dates by year

Last spring and first fall frost at NOAA station USC00190562, 2008 to 2025, measured from daily minimum temperatures.

Elevation 550 ft, 42.280, -72.348. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 26	Oct 17
Earliest	Apr 18 (2009)	Oct 5 (2019)
Latest	May 18 (2023)	Nov 3 (2021)
Trend	6.2 days later per decade	1.8 days later per decade
Years with data	17	18

At 28°F (hard freeze) the median last spring date is Apr 21 and the median first fall date is Nov 1.

The trend is a straight-line fit through the years with a freeze. A positive spring trend means the last frost now comes later. Short or patchy records give noisy trends.

Chart

Last spring frost (32°F)

First fall frost (32°F)

Dots are single years. The gray line is the median, the green line the fitted trend.

Year by year

Year	Last spring 32°F	First fall 32°F	Last spring 28°F	First fall 28°F
2025	Apr 21	Oct 10	Apr 18	Oct 10
2024	Apr 28	Oct 15	Apr 22	Nov 4
2023	May 18	Nov 1	May 18	Nov 2
2022	May 1	Oct 9	Apr 18	Nov 15
2021	Apr 23	Nov 3	Apr 23	Nov 4
2020	May 14	Oct 30	Apr 23	Oct 31
2019	Apr 30	Oct 5	Apr 11	Nov 2
2018	Apr 25	Oct 17	Apr 22	Oct 19
2017	May 10	Nov 1	Apr 10	Nov 1
2016	May 10	Oct 15	Apr 13	Nov 1
2015	Apr 26	Oct 18	Apr 25	Oct 18
2014	Apr 26	Oct 20	Apr 21	Nov 13
2013	Apr 22	Oct 24	Apr 7	Oct 26
2012	May 1	Oct 13	Apr 30	Oct 13
2011	Apr 23	Oct 28	Apr 23	Oct 31
2010	Apr 24	Oct 23	Mar 29	Nov 3
2009	Apr 18	Oct 12	Apr 13	Nov 7
2008	no data	Oct 7	no data	Oct 24

"none" means the station recorded no freeze at that threshold in that half of the year. "no data" means more than 10% of the season's daily readings were missing. Years with no usable data are left out. See the methodology for the rules, and the ZIP lookup for 1991 to 2020 frost probabilities.