Troy Muni Ap, AL: frost dates by year

Last spring and first fall frost at NOAA station USW00003878, 2001 to 2024, measured from daily minimum temperatures.

Elevation 397 ft, 31.861, -86.012. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 15	Nov 8
Earliest	Feb 20 (2012)	Oct 19 (2009)
Latest	Apr 8 (2009)	Nov 30 (2020)
Trend	4.5 days earlier per decade	3.2 days later per decade
Years with data	24	24

At 28°F (hard freeze) the median last spring date is Mar 3 and the median first fall date is Nov 25.

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
2024	Mar 19	Nov 23	Jan 21	Nov 30
2023	Mar 21	Nov 1	Mar 20	none
2022	Mar 14	Oct 19	Mar 13	Nov 18
2021	Mar 8	Nov 14	Feb 17	none
2020	Mar 1	Nov 30	Feb 28	Dec 2
2019	Mar 7	Nov 12	Mar 7	Nov 12
2018	Mar 22	Nov 16	Feb 3	Nov 27
2017	Mar 16	Nov 20	Mar 16	Dec 10
2016	Feb 28	Nov 11	Feb 10	Nov 20
2015	Mar 8	Nov 15	Mar 6	none
2014	Mar 26	Nov 2	Feb 28	Nov 14
2013	Mar 28	Oct 26	Mar 27	Nov 14
2012	Feb 20	Nov 8	Feb 13	Nov 25
2011	Mar 12	Oct 21	Feb 13	Nov 11
2010	Mar 8	Nov 6	Mar 7	Nov 7
2009	Apr 8	Oct 19	Mar 3	Dec 5
2008	Mar 26	Oct 28	Mar 25	Nov 26
2007	Mar 6	Nov 7	Mar 5	Dec 17
2006	Mar 27	Nov 3	Feb 27	Dec 4
2005	Mar 10	Oct 26	Mar 2	Nov 18
2004	Apr 1	Nov 26	Mar 11	Dec 15
2003	Mar 31	Nov 14	Feb 11	Nov 25
2002	Mar 23	Nov 18	Mar 6	Nov 28
2001	Mar 8	Oct 27	Feb 6	Oct 28

"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.