Paddock Lake, WI: frost dates by year

Last spring and first fall frost at NOAA station USC00476380, 2005 to 2025, measured from daily minimum temperatures.

Elevation 775 ft, 42.581, -88.090. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 28	Oct 17
Earliest	Apr 17 (2007)	Sep 29 (2022)
Latest	May 18 (2023)	Oct 28 (2011)
Trend	5.9 days later per decade	1.2 days earlier per decade
Years with data	15	18

At 28°F (hard freeze) the median last spring date is Apr 21 and the median first fall date is Oct 24.

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 24	Apr 16	Oct 24
2024	Apr 25	Oct 16	Apr 25	Oct 17
2023	May 18	Oct 17	Apr 27	Oct 30
2022	Apr 27	Sep 29	Apr 27	Oct 19
2021	no data	Oct 22	no data	Oct 24
2018	Apr 30	Oct 13	Apr 20	Oct 18
2017	no data	Oct 26	no data	Nov 6
2016	May 15	no data	Apr 12	no data
2015	Apr 28	Oct 15	Apr 25	Oct 15
2014	Apr 24	Oct 11	Apr 24	Nov 2
2013	May 13	Oct 22	Apr 21	Oct 22
2012	Apr 28	Oct 12	Apr 27	Oct 27
2011	Apr 21	Oct 28	Apr 2	Oct 30
2010	May 10	Oct 22	Apr 9	Oct 22
2009	Apr 23	Oct 10	Apr 13	Oct 11
2008	Apr 30	Oct 4	Apr 30	Nov 10
2007	Apr 17	Oct 28	Apr 16	Nov 2
2006	no data	Oct 12	no data	Oct 15
2005	no data	Oct 26	no data	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.