Windham 2NW, ME: frost dates by year

Last spring and first fall frost at NOAA station USC00179720, 2011 to 2025, measured from daily minimum temperatures.

Elevation 443 ft, 43.857, -70.466. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 24	Oct 29
Earliest	Apr 11 (2023)	Oct 14 (2012)
Latest	Apr 30 (2016)	Nov 13 (2014)
Trend	5.7 days earlier per decade	6.0 days later per decade
Years with data	14	15

At 28°F (hard freeze) the median last spring date is Apr 11 and the median first fall date is Nov 12.

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 11	Nov 3	Apr 11	Nov 19
2024	Apr 27	Oct 29	Apr 25	Nov 14
2023	Apr 11	Nov 1	Apr 10	Nov 12
2022	Apr 24	Nov 9	Apr 4	Nov 15
2021	Apr 23	Nov 3	Apr 5	Nov 5
2020	Apr 24	Oct 25	Apr 23	Oct 31
2019	Apr 18	Nov 2	Apr 12	Nov 8
2018	Apr 24	Oct 19	Apr 17	Nov 12
2017	Apr 16	Nov 8	Apr 1	Nov 8
2016	Apr 30	Oct 28	Apr 11	Nov 1
2015	Apr 24	Oct 18	Apr 10	Nov 18
2014	Apr 21	Nov 13	Apr 19	Nov 15
2013	no data	Oct 29	no data	Oct 29
2012	Apr 29	Oct 14	Apr 2	Nov 6
2011	Apr 22	Oct 28	Apr 16	Nov 22

"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.