Last Frost Day

Frost history / Elgin, IL

Elgin, IL: frost dates by year

Last spring and first fall frost at NOAA station USC00112736, 1976 to 2025, measured from daily minimum temperatures.

Elevation 763 ft, 42.063, -88.286. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianApr 26Oct 13
EarliestApr 10 (1985)Sep 23 (1995)
LatestMay 27 (1992)Nov 12 (2016)
Trendlittle change (less than half a day per decade)3.7 days later per decade
Years with data4447

At 28°F (hard freeze) the median last spring date is Apr 16 and the median first fall date is Oct 28.

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)

Mar 31Apr 15Apr 30May 15May 30Jun 14198019902000201020201976: May 81978: May 21979: May 11980: Apr 261981: Apr 221982: Apr 281983: May 101985: Apr 101986: Apr 231987: Apr 101988: Apr 291990: Apr 191992: May 271993: Apr 221994: May 11995: Apr 241996: Apr 271997: Apr 221998: Apr 171999: Apr 262000: Apr 222001: Apr 192002: May 212003: Apr 232004: May 42006: Apr 262007: Apr 182008: May 22009: Apr 172011: Apr 222012: Apr 282013: May 132014: Apr 232015: Apr 252016: Apr 132017: Apr 232018: Apr 292019: Apr 292020: May 102021: May 122022: Apr 282023: Apr 272024: Apr 252025: Apr 16

First fall frost (32°F)

Sep 12Sep 27Oct 12Oct 27Nov 11Nov 26198019902000201020201976: Oct 161977: Oct 131978: Oct 81979: Oct 141980: Oct 51981: Oct 31983: Oct 141985: Oct 21987: Oct 31988: Oct 61989: Oct 41990: Oct 111991: Sep 271992: Oct 171993: Sep 301994: Oct 101995: Sep 231996: Oct 111997: Oct 151998: Oct 221999: Oct 242000: Oct 72001: Oct 72002: Oct 142003: Oct 12004: Oct 52005: Oct 232006: Oct 122007: Oct 282008: Oct 282009: Oct 102010: Oct 222011: Oct 282012: Oct 62013: Oct 222014: Oct 192015: Oct 172016: Nov 122017: Nov 62018: Oct 132019: Oct 182020: Oct 52021: Nov 22022: Oct 82023: Oct 302024: Oct 172025: Oct 24

Dots are single years. The gray line is the median, the green line the fitted trend.

Year by year

YearLast spring 32°FFirst fall 32°FLast spring 28°FFirst fall 28°F
2025Apr 16Oct 24Apr 9Nov 10
2024Apr 25Oct 17Apr 6Nov 21
2023Apr 27Oct 30Apr 27Oct 31
2022Apr 28Oct 8Apr 17Nov 13
2021May 12Nov 2Apr 22Nov 3
2020May 10Oct 5May 10Oct 28
2019Apr 29Oct 18Apr 16Nov 1
2018Apr 29Oct 13Apr 20Oct 18
2017Apr 23Nov 6Mar 23Nov 8
2016Apr 13Nov 12Apr 12Nov 12
2015Apr 25Oct 17Apr 24Oct 17
2014Apr 23Oct 19Apr 16Nov 2
2013May 13Oct 22Apr 21Oct 22
2012Apr 28Oct 6Apr 11Nov 4
2011Apr 22Oct 28Apr 1Nov 17
2010no dataOct 22no dataOct 30
2009Apr 17Oct 10Apr 12Oct 11
2008May 2Oct 28Apr 3Oct 28
2007Apr 18Oct 28Apr 16Nov 2
2006Apr 26Oct 12Apr 26Oct 12
2005no dataOct 23no dataOct 28
2004May 4Oct 5May 3Nov 8
2003Apr 23Oct 1Apr 11Oct 2
2002May 21Oct 14Apr 7Oct 20
2001Apr 19Oct 7Apr 17Oct 7
2000Apr 22Oct 7Apr 13Oct 9
1999Apr 26Oct 24Mar 27Oct 24
1998Apr 17Oct 22Apr 6Nov 6
1997Apr 22Oct 15Apr 19Oct 28
1996Apr 27Oct 11Apr 17Oct 11
1995Apr 24Sep 23Apr 6Nov 3
1994May 1Oct 10Apr 8Nov 19
1993Apr 22Sep 30Apr 5Oct 10
1992May 27Oct 17Apr 28Oct 17
1991no dataSep 27no dataOct 16
1990Apr 19Oct 11Apr 18Oct 19
1989no dataOct 4no dataNov 3
1988Apr 29Oct 6Apr 21Oct 12
1987Apr 10Oct 3Apr 9Oct 8
1986Apr 23no dataApr 22no data
1985Apr 10Oct 2Apr 10Nov 20
1983May 10Oct 14Apr 20Nov 5
1982Apr 28no dataApr 11no data
1981Apr 22Oct 3Apr 22Oct 23
1980Apr 26Oct 5Apr 16Oct 25
1979May 1Oct 14Apr 10Oct 26
1978May 2Oct 8Apr 22Nov 14
1977no dataOct 13no dataNov 11
1976May 8Oct 16Apr 25Oct 17

"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.