Last Frost Day

Frost history / Effingham 3SW, IL

Effingham 3SW, IL: frost dates by year

Last spring and first fall frost at NOAA station USC00112687, 1951 to 2019, measured from daily minimum temperatures.

Elevation 625 ft, 39.118, -88.624. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianApr 14Oct 18
EarliestMar 23 (2017)Oct 1 (1958)
LatestMay 12 (1981)Nov 13 (2016)
Trend1.2 days earlier per decade0.8 days later per decade
Years with data5761

At 28°F (hard freeze) the median last spring date is Apr 3 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)

Mar 16Mar 31Apr 15Apr 30May 15May 301960197019801990200020101952: Apr 171953: Apr 211954: May 41955: Apr 81956: Apr 251958: Apr 121960: Apr 101961: Apr 161962: Apr 161963: May 11964: Apr 91965: Apr 21967: May 31968: May 61969: Apr 301970: Apr 71971: Apr 81972: Apr 91973: Apr 141974: Apr 91976: May 81977: Apr 71978: May 61979: Apr 101980: May 91981: May 121982: Apr 221983: May 91984: Apr 11985: Apr 101986: Apr 231988: Mar 301991: Mar 311992: Apr 281993: Apr 221994: Apr 81995: Apr 62000: Apr 132001: Apr 192002: Apr 62003: Apr 132004: Apr 152005: May 42006: Apr 102007: Apr 142008: Apr 162009: Apr 132010: Apr 102011: Apr 212012: Apr 132013: Apr 212014: Apr 172015: Apr 52016: Apr 102017: Mar 232018: Apr 182019: Apr 16

First fall frost (32°F)

Sep 12Sep 27Oct 12Oct 27Nov 11Nov 261960197019801990200020101951: Nov 11952: Oct 31953: Oct 301954: Oct 181955: Oct 191957: Oct 111958: Oct 11959: Oct 181960: Oct 201961: Oct 271962: Oct 241963: Oct 301964: Oct 71965: Oct 251966: Oct 201967: Oct 121968: Oct 41969: Oct 171970: Oct 171971: Oct 121972: Oct 191973: Nov 51975: Oct 31976: Oct 101977: Oct 131978: Oct 81979: Oct 101980: Oct 51981: Oct 31982: Oct 211983: Nov 51984: Nov 21985: Oct 21986: Nov 101987: Oct 81990: Oct 191991: Oct 161992: Oct 171993: Oct 281994: Oct 271995: Oct 251999: Oct 52000: Oct 72001: Oct 72002: Oct 142003: Oct 22004: Oct 32006: Oct 122007: Oct 292008: Oct 282009: Oct 182010: Oct 292011: Oct 212012: Oct 82013: Oct 222014: Oct 302015: Oct 182016: Nov 132017: Oct 292018: Oct 212019: Nov 1

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
2019Apr 16Nov 1Apr 2Nov 1
2018Apr 18Oct 21Apr 17Oct 21
2017Mar 23Oct 29Mar 20Oct 31
2016Apr 10Nov 13Apr 10Nov 13
2015Apr 5Oct 18Mar 29Oct 18
2014Apr 17Oct 30Mar 31Nov 2
2013Apr 21Oct 22Apr 3Oct 22
2012Apr 13Oct 8Apr 12Nov 13
2011Apr 21Oct 21Mar 29Nov 11
2010Apr 10Oct 29Mar 7Oct 29
2009Apr 13Oct 18Mar 31Nov 27
2008Apr 16Oct 28Apr 15Nov 10
2007Apr 14Oct 29Apr 14Nov 2
2006Apr 10Oct 12Apr 9Oct 12
2005May 4no dataMar 18no data
2004Apr 15Oct 3Mar 23Nov 25
2003Apr 13Oct 2Mar 31Nov 7
2002Apr 6Oct 14Apr 5Nov 2
2001Apr 19Oct 7Apr 18Oct 28
2000Apr 13Oct 7Apr 9Oct 9
1999no dataOct 5no dataOct 24
1995Apr 6Oct 25Apr 6Nov 3
1994Apr 8Oct 27Apr 8Nov 23
1993Apr 22Oct 28Apr 4Nov 1
1992Apr 28Oct 17Apr 3Oct 19
1991Mar 31Oct 16Mar 31Nov 2
1990no dataOct 19no dataNov 8
1988Mar 30no dataMar 27no data
1987no dataOct 8no dataOct 9
1986Apr 23Nov 10Mar 23Nov 10
1985Apr 10Oct 2Apr 9Nov 20
1984Apr 1Nov 2Mar 31Nov 6
1983May 9Nov 5Apr 20Nov 12
1982Apr 22Oct 21Apr 11Oct 21
1981May 12Oct 3Apr 6Oct 24
1980May 9Oct 5Mar 23Oct 5
1979Apr 10Oct 10Apr 8Oct 10
1978May 6Oct 8Mar 19Oct 24
1977Apr 7Oct 13Mar 8Nov 12
1976May 8Oct 10Apr 12Oct 18
1975no dataOct 3no dataNov 14
1974Apr 9no dataApr 9no data
1973Apr 14Nov 5Apr 11Nov 6
1972Apr 9Oct 19Apr 9Oct 20
1971Apr 8Oct 12Mar 26Nov 4
1970Apr 7Oct 17Mar 30Nov 15
1969Apr 30Oct 17Mar 31Oct 23
1968May 6Oct 4Mar 24Oct 26
1967May 3Oct 12Mar 22Nov 4
1966no dataOct 20no dataNov 2
1965Apr 2Oct 25Mar 31Oct 29
1964Apr 9Oct 7Apr 1Oct 10
1963May 1Oct 30Mar 22Nov 3
1962Apr 16Oct 24Apr 16Oct 24
1961Apr 16Oct 27Apr 2Nov 4
1960Apr 10Oct 20Apr 10Oct 20
1959no dataOct 18no dataOct 28
1958Apr 12Oct 1Apr 12Oct 2
1957no dataOct 11no dataOct 27
1956Apr 25no dataMar 30no data
1955Apr 8Oct 19Mar 30Nov 3
1954May 4Oct 18Apr 3Oct 30
1953Apr 21Oct 30Apr 21Nov 5
1952Apr 17Oct 3Apr 11Oct 3
1951no dataNov 1no dataNov 2

"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.