Manchester, MI: frost dates by year

Last spring and first fall frost at NOAA station USC00205050, 2002 to 2025, measured from daily minimum temperatures.

Elevation 965 ft, 42.151, -84.024. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 30	Oct 16
Earliest	Apr 15 (2019)	Oct 1 (2003)
Latest	May 18 (2002)	Oct 26 (2017)
Trend	2.7 days earlier per decade	5.2 days later per decade
Years with data	19	17

At 28°F (hard freeze) the median last spring date is Apr 25 and the median first fall date is Nov 2.

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 18	Oct 25	Apr 17	Nov 2
2024	Apr 26	Oct 17	Apr 26	Nov 13
2023	Apr 27	Oct 23	Apr 26	Oct 31
2022	Apr 29	Oct 8	Apr 29	Nov 17
2021	May 13	Oct 24	May 13	Nov 3
2020	May 14	Oct 16	May 13	Oct 16
2019	Apr 15	Oct 15	Apr 2	Nov 6
2018	May 1	Oct 16	Apr 30	Oct 16
2017	May 10	Oct 26	Apr 9	Nov 8
2016	May 16	Oct 14	Apr 10	Nov 12
2015	Apr 28	Oct 17	Apr 25	Oct 18
2014	May 7	Oct 11	Apr 17	Nov 2
2013	May 14	Oct 22	May 14	Nov 12
2012	Apr 30	Oct 8	Apr 30	Oct 8
2011	Apr 20	Oct 22	Apr 6	Oct 30
2006	Apr 26	no data	Apr 25	no data
2004	May 4	no data	May 3	no data
2003	Apr 26	Oct 1	Apr 23	Oct 16
2002	May 18	Oct 13	Apr 6	Oct 16

"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.