Kimball 3N, MN: frost dates by year

Last spring and first fall frost at NOAA station USC00214373, 2009 to 2025, measured from daily minimum temperatures.

Elevation 1,160 ft, 45.353, -94.306. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 4	Oct 11
Earliest	Apr 20 (2025)	Sep 14 (2011)
Latest	May 20 (2015)	Oct 28 (2023)
Trend	4.8 days earlier per decade	6.7 days later per decade
Years with data	17	16

At 28°F (hard freeze) the median last spring date is Apr 22 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	Apr 20	Oct 23	Apr 9	Nov 8
2024	Apr 25	Oct 15	Apr 1	Nov 1
2023	Apr 27	Oct 28	Apr 27	Oct 28
2022	Apr 29	Oct 14	Apr 28	Oct 17
2021	May 12	no data	Apr 25	no data
2020	May 13	Oct 2	Apr 22	Oct 5
2019	May 9	Oct 11	Apr 16	Oct 24
2018	Apr 29	Sep 29	Apr 28	Oct 12
2017	May 2	Oct 10	Apr 28	Oct 11
2016	May 15	Oct 8	Apr 13	Nov 19
2015	May 20	Oct 16	Apr 24	Nov 13
2014	May 5	Oct 9	Apr 19	Oct 31
2013	May 13	Oct 20	May 12	Oct 22
2012	Apr 21	Oct 5	Apr 21	Oct 8
2011	May 4	Sep 14	May 2	Oct 30
2010	May 10	Oct 27	Apr 22	Oct 29
2009	Apr 29	Oct 9	Apr 15	Oct 9

"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.