Last Frost Day

Frost history / Mound City, KS

Mound City, KS: frost dates by year

Last spring and first fall frost at NOAA station USC00145528, 1951 to 2007, measured from daily minimum temperatures.

Elevation 840 ft, 38.143, -94.823. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianApr 20Oct 14
EarliestMar 29 (1999)Sep 22 (1995)
LatestMay 11 (1981)Nov 11 (1998)
Trend0.9 days earlier per decade0.8 days later per decade
Years with data5555

At 28°F (hard freeze) the median last spring date is Apr 8 and the median first fall date is Oct 26.

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 30196019701980199020001951: Apr 231952: Apr 161953: Apr 271954: May 41955: Apr 81956: Apr 241957: Apr 141958: Mar 311959: Apr 221960: May 11961: May 21962: Apr 161963: May 11964: Apr 91965: Apr 281966: Apr 211967: Apr 271968: Apr 51969: Apr 291970: Apr 51971: Apr 141972: Apr 251974: Apr 61975: Apr 121976: May 71977: Apr 51978: Apr 211979: Apr 281980: May 91981: May 111982: Apr 231983: Apr 191984: Apr 51985: Apr 91986: Apr 221987: Apr 61988: Apr 201989: May 81990: Apr 151991: Apr 111992: May 71993: Apr 221994: Apr 81995: Apr 221996: Apr 301997: May 11998: Apr 181999: Mar 292000: Apr 92002: Apr 52003: Apr 112004: Apr 132005: May 22006: Apr 92007: Apr 15

First fall frost (32°F)

Sep 12Sep 27Oct 12Oct 27Nov 11Nov 26196019701980199020001951: Oct 81952: Oct 61953: Oct 71954: Oct 301955: Oct 151956: Nov 81957: Oct 181958: Oct 11959: Oct 181960: Oct 201961: Oct 11962: Oct 251963: Oct 291964: Oct 51965: Oct 121966: Oct 161967: Sep 291968: Oct 41969: Oct 141970: Oct 161971: Oct 101972: Oct 191973: Nov 61974: Nov 61975: Oct 251976: Oct 61977: Oct 121978: Oct 71979: Oct 51980: Oct 121981: Oct 191982: Oct 211983: Sep 231984: Sep 301985: Oct 11986: Nov 101987: Oct 31988: Oct 121989: Sep 241990: Oct 221991: Oct 61992: Oct 171993: Oct 101994: Oct 251995: Sep 221996: Oct 311997: Oct 271998: Nov 112000: Oct 72001: Oct 252002: Oct 122003: Oct 252004: Nov 42005: Oct 242006: Oct 12

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 15no dataApr 14no data
2006Apr 9Oct 12Mar 25Oct 12
2005May 2Oct 24Apr 1Oct 24
2004Apr 13Nov 4Mar 30Nov 24
2003Apr 11Oct 25Apr 10Nov 6
2002Apr 5Oct 12Apr 5Nov 1
2001no dataOct 25no dataOct 25
2000Apr 9Oct 7Mar 12Oct 8
1999Mar 29no dataMar 29no data
1998Apr 18Nov 11Mar 22Nov 20
1997May 1Oct 27Apr 15Oct 27
1996Apr 30Oct 31Apr 9Oct 31
1995Apr 22Sep 22Mar 31Oct 21
1994Apr 8Oct 25Apr 8Oct 26
1993Apr 22Oct 10Apr 6Oct 30
1992May 7Oct 17Apr 3Nov 27
1991Apr 11Oct 6Mar 31Oct 6
1990Apr 15Oct 22Apr 13Oct 22
1989May 8Sep 24Apr 11Oct 20
1988Apr 20Oct 12Apr 16Oct 28
1987Apr 6Oct 3Apr 6Oct 21
1986Apr 22Nov 10Apr 22Nov 10
1985Apr 9Oct 1Apr 9Nov 7
1984Apr 5Sep 30Apr 1Sep 30
1983Apr 19Sep 23Apr 15Nov 16
1982Apr 23Oct 21Apr 21Oct 21
1981May 11Oct 19Mar 23Oct 23
1980May 9Oct 12Mar 14Oct 26
1979Apr 28Oct 5Apr 6Nov 2
1978Apr 21Oct 7Apr 21Nov 7
1977Apr 5Oct 12Mar 31Nov 18
1976May 7Oct 6May 3Oct 17
1975Apr 12Oct 25Apr 3Oct 25
1974Apr 6Nov 6Mar 25Nov 6
1973no dataNov 6no dataNov 6
1972Apr 25Oct 19Apr 8Oct 19
1971Apr 14Oct 10Apr 5Nov 7
1970Apr 5Oct 16Apr 5Nov 5
1969Apr 29Oct 14Mar 30Oct 17
1968Apr 5Oct 4Apr 5Oct 29
1967Apr 27Sep 29Apr 24Nov 4
1966Apr 21Oct 16Apr 21Oct 16
1965Apr 28Oct 12Mar 27Oct 12
1964Apr 9Oct 5Apr 9Oct 9
1963May 1Oct 29May 1Oct 29
1962Apr 16Oct 25Apr 13Oct 25
1961May 2Oct 1Apr 17Oct 20
1960May 1Oct 20Mar 26Oct 20
1959Apr 22Oct 18Apr 14Oct 18
1958Mar 31Oct 1Mar 28Oct 1
1957Apr 14Oct 18Apr 14Oct 26
1956Apr 24Nov 8Apr 24Nov 9
1955Apr 8Oct 15Mar 28Oct 24
1954May 4Oct 30May 4Oct 30
1953Apr 27Oct 7Apr 20Nov 6
1952Apr 16Oct 6Apr 10Oct 6
1951Apr 23Oct 8Apr 23Nov 1

"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.