Lodi, WI: frost dates by year

Last spring and first fall frost at NOAA station USC00474790, 2006 to 2025, measured from daily minimum temperatures.

Elevation 824 ft, 43.322, -89.531. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 10	Oct 9
Earliest	Apr 17 (2007)	Sep 15 (2007)
Latest	May 29 (2021)	Nov 9 (2016)
Trend	1.4 days earlier per decade	11.2 days later per decade
Years with data	20	20

At 28°F (hard freeze) the median last spring date is Apr 23 and the median first fall date is Oct 21.

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 10	Oct 24	Apr 17	Oct 24
2024	Apr 26	Oct 16	Apr 21	Oct 16
2023	Apr 27	Oct 9	Apr 27	Oct 30
2022	May 5	Oct 8	Apr 27	Oct 8
2021	May 29	Oct 22	Apr 23	Oct 26
2020	May 13	Oct 3	May 9	Oct 19
2019	Apr 29	Oct 25	Apr 28	Oct 25
2018	Apr 29	Oct 13	Apr 29	Oct 13
2017	May 3	Oct 29	Apr 1	Oct 29
2016	May 15	Nov 9	Apr 13	Nov 12
2015	May 13	Oct 17	Apr 26	Oct 17
2014	May 17	Oct 5	Apr 23	Oct 11
2013	May 14	Oct 14	Apr 23	Oct 22
2012	Apr 29	Sep 19	Apr 23	Sep 24
2011	May 17	Oct 1	May 4	Oct 21
2010	May 9	Oct 3	Apr 10	Oct 22
2009	May 17	Oct 10	Apr 13	Oct 10
2008	May 19	Oct 4	Apr 15	Oct 21
2007	Apr 17	Sep 15	Apr 17	Oct 28
2006	May 6	Oct 6	Apr 10	Oct 12

"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.