Newton, IL: frost dates by year

Last spring and first fall frost at NOAA station USC00116157, 1995 to 2025, measured from daily minimum temperatures.

Elevation 531 ft, 38.992, -88.183. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 14	Oct 19
Earliest	Mar 27 (1999)	Sep 23 (1995)
Latest	May 9 (2020)	Nov 12 (2016)
Trend	3.0 days later per decade	6.2 days later per decade
Years with data	28	28

At 28°F (hard freeze) the median last spring date is Apr 2 and the median first fall date is Nov 1.

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 8	Nov 9	Apr 8	Nov 10
2024	Apr 6	Oct 17	Mar 19	Nov 26
2023	Apr 24	Oct 30	Mar 20	Oct 31
2022	Apr 19	Oct 18	Mar 28	Nov 12
2021	Apr 21	Nov 2	Apr 2	Nov 3
2020	May 9	Oct 5	Apr 16	Nov 1
2019	Apr 15	Oct 31	Apr 1	Nov 1
2018	Apr 29	Oct 18	Apr 8	Oct 21
2016	Apr 12	Nov 12	Apr 9	Nov 13
2015	Apr 24	no data	Mar 29	no data
2014	Apr 16	Oct 30	Mar 30	Nov 2
2013	Apr 20	Oct 22	Apr 3	Oct 24
2012	Apr 12	Oct 8	Apr 12	Nov 1
2011	Mar 31	Oct 21	Mar 31	Nov 11
2010	Apr 9	Oct 22	Mar 7	Oct 29
2009	Apr 9	Oct 11	Apr 8	Nov 27
2008	Apr 15	Oct 28	Mar 24	Oct 28
2007	Apr 13	Oct 29	Apr 10	Nov 6
2006	Apr 9	Oct 12	Mar 27	Oct 13
2005	May 4	Oct 28	Mar 17	Oct 28
2004	Apr 14	Oct 3	Apr 14	Nov 9
2003	Apr 10	Oct 2	Mar 31	Oct 2
2002	Apr 6	Oct 14	Apr 5	Nov 1
2001	Apr 18	Oct 17	Apr 18	Oct 28
2000	Apr 12	Oct 7	Mar 29	Nov 15
1999	Mar 27	Oct 18	Mar 27	Oct 24
1998	no data	Oct 23	no data	Nov 5
1997	Apr 18	no data	Apr 14	no data
1996	Apr 14	Oct 19	Apr 10	Nov 2
1995	no data	Sep 23	no data	Oct 25

"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.