Last Frost Day

Frost history / Gibson City, IL

Gibson City, IL: frost dates by year

Last spring and first fall frost at NOAA station USC00113413, 1981 to 2007, measured from daily minimum temperatures.

Elevation 750 ft, 40.473, -88.365. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianApr 18Oct 7
EarliestMar 29 (1999)Sep 20 (1991)
LatestMay 21 (2002)Oct 29 (2007)
Trend1.1 days earlier per decade5.6 days later per decade
Years with data2327

At 28°F (hard freeze) the median last spring date is Apr 11 and the median first fall date is Oct 20.

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 16Mar 31Apr 15Apr 30May 15May 30199020001981: Apr 211983: May 91984: Apr 71985: Apr 101986: Apr 231987: Apr 101988: Apr 211989: May 81990: Apr 191991: Mar 311992: May 71994: Apr 231995: Apr 141996: Apr 271997: Apr 281998: Apr 51999: Mar 292000: Apr 132001: Apr 182002: May 212003: Apr 142004: Apr 142007: Apr 16

First fall frost (32°F)

Sep 12Sep 27Oct 12Oct 27Nov 11199020001981: Oct 31982: Oct 211983: Sep 221984: Sep 301985: Oct 21986: Oct 151987: Oct 31988: Oct 51989: Sep 241990: Oct 111991: Sep 201992: Oct 171993: Sep 301994: Oct 251995: Sep 231996: Oct 111997: Oct 151998: Oct 221999: Oct 52000: Oct 72001: Oct 172002: Oct 142003: Oct 22004: Oct 32005: Oct 282006: Oct 122007: Oct 29

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
2007Apr 16Oct 29Apr 11Nov 2
2006no dataOct 12no dataOct 14
2005no dataOct 28no dataNov 17
2004Apr 14Oct 3Apr 14Nov 9
2003Apr 14Oct 2Apr 13Oct 2
2002May 21Oct 14Apr 6Oct 14
2001Apr 18Oct 17Apr 17Oct 28
2000Apr 13Oct 7Apr 12Oct 7
1999Mar 29Oct 5Mar 29Oct 24
1998Apr 5Oct 22Mar 24Oct 22
1997Apr 28Oct 15Apr 14Oct 22
1996Apr 27Oct 11Apr 17Oct 20
1995Apr 14Sep 23Apr 6Sep 23
1994Apr 23Oct 25Apr 8Oct 27
1993no dataSep 30no dataOct 31
1992May 7Oct 17Apr 5Oct 17
1991Mar 31Sep 20Mar 31Oct 20
1990Apr 19Oct 11Apr 19Oct 19
1989May 8Sep 24May 7Oct 4
1988Apr 21Oct 5Apr 20Oct 6
1987Apr 10Oct 3Apr 9Oct 8
1986Apr 23Oct 15Apr 23Nov 3
1985Apr 10Oct 2Apr 9Oct 2
1984Apr 7Sep 30Mar 19Nov 2
1983May 9Sep 22Apr 20Nov 5
1982no dataOct 21no dataOct 22
1981Apr 21Oct 3Apr 6Oct 3

"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.