Leverett #2, MA: frost dates by year

Last spring and first fall frost at NOAA station USC00194154, 2010 to 2025, measured from daily minimum temperatures.

Elevation 315 ft, 42.447, -72.530. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 1	Oct 13
Earliest	Apr 21 (2025)	Oct 5 (2019)
Latest	May 18 (2023)	Oct 31 (2023)
Trend	7.3 days earlier per decade	4.7 days later per decade
Years with data	15	16

At 28°F (hard freeze) the median last spring date is Apr 23 and the median first fall date is Oct 29.

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 27	Oct 15	Apr 23	Oct 17
2023	May 18	Oct 31	May 18	Nov 2
2022	May 1	Oct 9	Apr 30	Oct 29
2021	Apr 27	Oct 24	Apr 5	Nov 3
2020	no data	Oct 18	no data	Oct 31
2019	Apr 29	Oct 5	Apr 11	Nov 2
2018	Apr 24	Oct 18	Apr 23	Oct 19
2017	May 4	Oct 17	Apr 9	Nov 9
2016	May 11	Oct 11	Apr 15	Oct 26
2015	Apr 25	Oct 14	Apr 25	Oct 18
2014	May 7	Oct 6	Apr 25	Nov 8
2013	May 16	Oct 23	Apr 22	Oct 24
2012	May 1	Oct 13	May 1	Oct 13
2011	May 6	Oct 6	Apr 22	Oct 28
2010	May 14	Oct 10	May 12	Oct 30

"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.