Last Frost Day

Frost history / Newton 6 Sse, IL

Newton 6 Sse, IL: frost dates by year

Last spring and first fall frost at NOAA station USC00116159, 1952 to 2002, measured from daily minimum temperatures.

Elevation 510 ft, 38.914, -88.118. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianApr 13Oct 17
EarliestMar 24 (1998)Sep 23 (1995)
LatestMay 12 (1989)Nov 10 (1986)
Trend1.6 days earlier per decade2.1 days earlier per decade
Years with data4951

At 28°F (hard freeze) the median last spring date is Apr 3 and the median first fall date is Nov 2.

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 30196019701980199020001952: Apr 111953: Apr 211954: Apr 91955: Apr 81956: Apr 241957: Apr 151958: Mar 291959: Apr 131960: May 121961: Apr 161962: Apr 161963: May 11964: Apr 91965: Apr 21966: May 101967: May 31968: May 51969: Mar 311971: Apr 151972: Apr 101973: Apr 141974: Apr 101975: Apr 121976: May 41977: Apr 61978: May 21979: Apr 101980: Apr 251981: Apr 61982: Apr 211983: Apr 211984: Apr 11985: Apr 101986: Apr 231987: Apr 101988: Apr 301989: May 121990: Apr 181991: Mar 311993: Apr 41994: Apr 81995: Apr 61996: Apr 151997: Apr 181998: Mar 241999: Mar 272000: Apr 132001: Apr 192002: Apr 6

First fall frost (32°F)

Sep 12Sep 27Oct 12Oct 27Nov 11Nov 26196019701980199020001952: Oct 31953: Oct 301954: Oct 301955: Oct 251956: Nov 91957: Oct 201958: Oct 21959: Oct 181960: Oct 201961: Oct 271962: Oct 241963: Oct 301964: Oct 101965: Oct 241966: Oct 201967: Oct 121968: Oct 51969: Oct 171970: Oct 161971: Nov 41972: Oct 191973: Nov 51974: Oct 21975: Oct 31976: Oct 101977: Oct 131978: Oct 81979: Oct 101980: Oct 51981: Oct 31982: Oct 211983: Sep 241984: Nov 21985: Oct 21986: Nov 101987: Oct 41988: Oct 61989: Sep 241990: Oct 191991: Oct 161992: Oct 171993: Oct 281994: Oct 271995: Sep 231996: Oct 201997: Oct 221998: Oct 231999: Oct 52000: Oct 72001: Oct 72002: Oct 14

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
2002Apr 6Oct 14Apr 5Nov 2
2001Apr 19Oct 7Mar 29Oct 28
2000Apr 13Oct 7Apr 9Nov 15
1999Mar 27Oct 5Mar 27Oct 24
1998Mar 24Oct 23Mar 24Nov 5
1997Apr 18Oct 22Apr 14Oct 22
1996Apr 15Oct 20Apr 10Nov 2
1995Apr 6Sep 23Apr 6Nov 3
1994Apr 8Oct 27Apr 8Nov 23
1993Apr 4Oct 28Apr 3Nov 1
1992no dataOct 17no dataOct 19
1991Mar 31Oct 16Mar 31Nov 2
1990Apr 18Oct 19Apr 12Nov 8
1989May 12Sep 24Apr 14Nov 3
1988Apr 30Oct 6Mar 19Oct 6
1987Apr 10Oct 4Apr 9Oct 8
1986Apr 23Nov 10Mar 23Nov 10
1985Apr 10Oct 2Apr 9Nov 20
1984Apr 1Nov 2Mar 23Nov 3
1983Apr 21Sep 24Apr 20Nov 6
1982Apr 21Oct 21Apr 11Oct 25
1981Apr 6Oct 3Mar 24Oct 24
1980Apr 25Oct 5Mar 22Oct 13
1979Apr 10Oct 10Apr 7Oct 14
1978May 2Oct 8Mar 19Nov 8
1977Apr 6Oct 13Mar 7Nov 12
1976May 4Oct 10Mar 22Oct 18
1975Apr 12Oct 3Apr 7Nov 14
1974Apr 10Oct 2Apr 9Oct 21
1973Apr 14Nov 5Apr 11Nov 6
1972Apr 10Oct 19Apr 9Oct 20
1971Apr 15Nov 4Apr 7Nov 7
1970no dataOct 16no dataNov 16
1969Mar 31Oct 17Mar 31Oct 24
1968May 5Oct 5Mar 24Nov 10
1967May 3Oct 12Mar 22Nov 4
1966May 10Oct 20Apr 10Nov 3
1965Apr 2Oct 24Mar 31Oct 29
1964Apr 9Oct 10Apr 1Oct 24
1963May 1Oct 30Mar 22Nov 2
1962Apr 16Oct 24Apr 16Oct 24
1961Apr 16Oct 27Apr 16Nov 4
1960May 12Oct 20Apr 10Oct 20
1959Apr 13Oct 18Mar 28Oct 28
1958Mar 29Oct 2Mar 22Nov 7
1957Apr 15Oct 20Apr 13Oct 27
1956Apr 24Nov 9Mar 31Nov 9
1955Apr 8Oct 25Mar 30Nov 3
1954Apr 9Oct 30Apr 3Oct 30
1953Apr 21Oct 30Apr 19Nov 6
1952Apr 11Oct 3Mar 28Oct 7

"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.