Last Frost Day

Frost history / Wilmore 16SE, KS

Wilmore 16SE, KS: frost dates by year

Last spring and first fall frost at NOAA station USC00148914, 1987 to 2017, measured from daily minimum temperatures.

Elevation 1,667 ft, 37.132, -99.056. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianApr 20Oct 11
EarliestApr 3 (2016)Sep 15 (1993)
LatestMay 16 (2014)Oct 27 (2010)
Trend0.5 days earlier per decade3.9 days later per decade
Years with data3031

At 28°F (hard freeze) the median last spring date is Apr 12 and the median first fall date is Oct 24.

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 301990200020101988: Apr 281989: Apr 121990: Apr 121991: May 21992: Apr 281993: Apr 171994: May 21995: May 21996: May 11997: Apr 151998: Apr 221999: Apr 192000: Apr 182001: Apr 252002: Apr 62003: Apr 112004: Apr 142005: May 52006: Apr 272007: Apr 162008: May 52009: Apr 152010: Apr 92011: May 42012: Apr 92013: May 42014: May 162015: Apr 112016: Apr 32017: Apr 28

First fall frost (32°F)

Aug 28Sep 12Sep 27Oct 12Oct 27Nov 111990200020101987: Oct 121988: Oct 261989: Sep 241990: Oct 101991: Sep 191992: Oct 91993: Sep 151994: Oct 91995: Sep 221996: Oct 181997: Oct 221998: Oct 221999: Oct 42000: Sep 262001: Oct 62002: Oct 142003: Oct 262004: Oct 22005: Oct 242006: Oct 202007: Oct 232008: Oct 172009: Oct 22010: Oct 272011: Oct 192012: Oct 72013: Oct 172014: Oct 42015: Oct 252016: Oct 82017: Oct 11

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
2017Apr 28Oct 11Apr 7Oct 28
2016Apr 3Oct 8Apr 3Nov 12
2015Apr 11Oct 25Apr 5Oct 25
2014May 16Oct 4May 3Oct 29
2013May 4Oct 17May 4Oct 19
2012Apr 9Oct 7Mar 11Oct 7
2011May 4Oct 19Apr 13Oct 20
2010Apr 9Oct 27Apr 9Oct 29
2009Apr 15Oct 2Apr 13Oct 27
2008May 5Oct 17May 5Oct 25
2007Apr 16Oct 23Apr 16Oct 23
2006Apr 27Oct 20Mar 29Oct 22
2005May 5Oct 24Apr 2Oct 24
2004Apr 14Oct 2Apr 14Nov 4
2003Apr 11Oct 26Apr 10Oct 26
2002Apr 6Oct 14Apr 5Nov 4
2001Apr 25Oct 6Apr 18Oct 16
2000Apr 18Sep 26Apr 8Oct 8
1999Apr 19Oct 4Apr 18Oct 18
1998Apr 22Oct 22Apr 19Nov 11
1997Apr 15Oct 22Apr 15Oct 27
1996May 1Oct 18Apr 30Nov 2
1995May 2Sep 22Apr 12Oct 21
1994May 2Oct 9May 1Oct 26
1993Apr 17Sep 15Apr 17Sep 15
1992Apr 28Oct 9Apr 4Oct 17
1991May 2Sep 19Mar 19Oct 6
1990Apr 12Oct 10Apr 12Oct 10
1989Apr 12Sep 24Apr 11Sep 24
1988Apr 28Oct 26Apr 12Nov 6
1987no dataOct 12no dataOct 12

"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.