Turner, ME: frost dates by year

Last spring and first fall frost at NOAA station USC00178817, 2002 to 2025, measured from daily minimum temperatures.

Elevation 565 ft, 44.282, -70.256. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 26	Oct 14
Earliest	Apr 13 (2025)	Sep 26 (2009)
Latest	May 18 (2023)	Nov 3 (2021)
Trend	little change (less than half a day per decade)	4.1 days later per decade
Years with data	24	24

At 28°F (hard freeze) the median last spring date is Apr 17 and the median first fall date is Oct 31.

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

"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.