Lapeer 2W, MI: frost dates by year

Last spring and first fall frost at NOAA station USC00204659, 2007 to 2025, measured from daily minimum temperatures.

Elevation 837 ft, 43.058, -83.361. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 9	Oct 17
Earliest	Apr 19 (2011)	Sep 19 (2020)
Latest	May 28 (2008)	Oct 28 (2007)
Trend	3.3 days earlier per decade	4.3 days earlier per decade
Years with data	19	19

At 28°F (hard freeze) the median last spring date is Apr 27 and the median first fall date is Oct 26.

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	May 9	Oct 9	Apr 17	Oct 26
2024	Apr 26	Oct 17	Apr 25	Oct 27
2023	May 26	Oct 23	Apr 27	Oct 31
2022	Apr 29	Oct 3	Apr 29	Oct 21
2021	May 11	Oct 24	May 1	Nov 3
2020	May 13	Sep 19	May 13	Oct 16
2019	Apr 29	Oct 15	Apr 4	Oct 26
2018	Apr 30	Oct 16	Apr 29	Oct 18
2017	May 9	Oct 26	May 9	Oct 26
2016	Apr 27	Oct 10	Apr 27	Nov 12
2015	May 23	Oct 17	Apr 24	Oct 18
2014	Apr 27	Oct 11	Apr 27	Oct 12
2013	May 13	Oct 24	Apr 26	Oct 24
2012	Apr 29	Oct 8	Apr 29	Oct 8
2011	Apr 19	Oct 22	Apr 13	Oct 28
2010	May 10	Oct 22	Apr 23	Nov 1
2009	May 18	Oct 1	Apr 13	Oct 11
2008	May 28	Oct 22	Apr 30	Oct 23
2007	May 13	Oct 28	Apr 14	Nov 2

"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.