Gray, ME: frost dates by year

Last spring and first fall frost at NOAA station USC00173295, 1996 to 2025, measured from daily minimum temperatures.

Elevation 378 ft, 43.892, -70.254. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 24	Oct 19
Earliest	Apr 10 (2023)	Sep 29 (2000)
Latest	May 11 (2010)	Nov 8 (2017)
Trend	1.2 days earlier per decade	8.5 days later per decade
Years with data	30	30

At 28°F (hard freeze) the median last spring date is Apr 10 and the median first fall date is Nov 3.

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 12	Nov 3	Apr 10	Nov 14
2024	Apr 27	Oct 27	Apr 25	Oct 28
2023	Apr 10	Oct 31	Apr 9	Nov 1
2022	Apr 21	Oct 29	Mar 30	Nov 14
2021	Apr 23	Nov 3	Apr 4	Nov 5
2020	May 10	Oct 28	Apr 23	Oct 31
2019	Apr 11	Nov 2	Apr 11	Nov 8
2018	Apr 18	Oct 18	Apr 16	Oct 26
2017	Apr 19	Nov 8	Mar 26	Nov 8
2016	Apr 30	Oct 15	Apr 10	Nov 1
2015	Apr 24	Oct 18	Apr 9	Oct 18
2014	Apr 21	Nov 2	Apr 19	Nov 8
2013	Apr 23	Oct 26	Apr 7	Oct 29
2012	Apr 30	Oct 13	Apr 28	Nov 5
2011	Apr 23	Oct 28	Apr 16	Nov 6
2010	May 11	Oct 22	Mar 28	Nov 3
2009	Apr 15	Oct 14	Mar 26	Nov 19
2008	May 1	Oct 19	Apr 3	Oct 23
2007	Apr 15	Oct 29	Apr 11	Oct 29
2006	Apr 28	Oct 14	Apr 9	Nov 4
2005	Apr 17	Oct 29	Apr 16	Oct 29
2004	Apr 25	Oct 6	Apr 17	Nov 8
2003	Apr 25	Oct 20	Apr 18	Nov 8
2002	Apr 29	Oct 15	Apr 22	Oct 29
2001	Apr 29	Oct 19	Apr 2	Oct 29
2000	Apr 28	Sep 29	Apr 13	Nov 18
1999	Apr 24	Oct 7	Mar 27	Oct 28
1998	Apr 27	Oct 6	Mar 25	Nov 9
1997	Apr 16	Oct 19	Apr 15	Oct 22
1996	Apr 15	Oct 3	Apr 4	Nov 3

"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.