Last Frost Day

Frost history / Durant, OK

Durant, OK: frost dates by year

Last spring and first fall frost at NOAA station USC00342678, 1951 to 2010, measured from daily minimum temperatures.

Elevation 600 ft, 34.000, -96.369. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianMar 27Nov 6
EarliestMar 5 (1972)Oct 9 (2000)
LatestApr 19 (1988)Dec 5 (1973)
Trendlittle change (less than half a day per decade)0.6 days earlier per decade
Years with data4234

At 28°F (hard freeze) the median last spring date is Mar 13 and the median first fall date is Nov 13.

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)

Feb 14Mar 1Mar 16Mar 31Apr 15Apr 301960197019801990200020101951: Apr 171952: Mar 281954: Apr 11955: Mar 271956: Mar 161957: Apr 131958: Mar 201959: Apr 141960: Mar 121961: Apr 101962: Apr 21963: Mar 71966: Mar 241967: Mar 91968: Mar 241969: Mar 131970: Apr 31971: Mar 201972: Mar 51973: Apr 101974: Mar 241978: Mar 271979: Mar 121980: Apr 151981: Mar 231984: Mar 261985: Mar 51987: Apr 51988: Apr 191989: Apr 111991: Mar 301992: Apr 31993: Apr 21994: Apr 71995: Mar 91997: Apr 142001: Mar 192004: Mar 102005: Mar 272008: Apr 142009: Apr 82010: Mar 22

First fall frost (32°F)

Sep 27Oct 12Oct 27Nov 11Nov 26Dec 111960197019801990200020101951: Nov 21953: Nov 91955: Nov 31956: Nov 91958: Nov 191960: Nov 101961: Nov 51963: Nov 21966: Oct 201967: Nov 41968: Nov 81970: Nov 151971: Nov 71972: Nov 211973: Dec 51974: Nov 151978: Oct 151979: Oct 101981: Oct 241982: Oct 241984: Nov 211985: Nov 201986: Nov 111987: Nov 111988: Nov 171989: Oct 191991: Nov 11992: Nov 51993: Oct 301995: Nov 42000: Oct 92007: Nov 162008: Oct 282009: Nov 25

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
2010Mar 22no dataMar 4no data
2009Apr 8Nov 25Apr 7Dec 1
2008Apr 14Oct 28Mar 10Oct 28
2007no dataNov 16no dataNov 23
2005Mar 27no dataMar 17no data
2004Mar 10no dataFeb 28no data
2001Mar 19no dataFeb 10no data
2000no dataOct 9no dataNov 13
1997Apr 14no dataFeb 12no data
1995Mar 9Nov 4Mar 9Nov 4
1994Apr 7no dataMar 10no data
1993Apr 2Oct 30Mar 15Oct 30
1992Apr 3Nov 5Apr 2Nov 5
1991Mar 30Nov 1Feb 27Nov 1
1989Apr 11Oct 19Apr 11Oct 20
1988Apr 19Nov 17Mar 19Nov 17
1987Apr 5Nov 11Apr 3Nov 11
1986no dataNov 11no dataNov 13
1985Mar 5Nov 20Feb 16Nov 20
1984Mar 26Nov 21Mar 25Nov 21
1982no dataOct 24no dataOct 25
1981Mar 23Oct 24Mar 10Nov 20
1980Apr 15no dataApr 14no data
1979Mar 12Oct 10Mar 6Nov 10
1978Mar 27Oct 15Mar 26Nov 18
1974Mar 24Nov 15Mar 24Nov 29
1973Apr 10Dec 5Feb 17Dec 7
1972Mar 5Nov 21Mar 2Nov 23
1971Mar 20Nov 7Mar 4none
1970Apr 3Nov 15Mar 13Nov 16
1969Mar 13no dataMar 11no data
1968Mar 24Nov 8Mar 23Nov 9
1967Mar 9Nov 4Mar 9Nov 4
1966Mar 24Oct 20Mar 7Nov 2
1963Mar 7Nov 2Feb 26Dec 9
1962Apr 2no dataMar 16no data
1961Apr 10Nov 5Feb 20Dec 11
1960Mar 12Nov 10Mar 12Nov 10
1959Apr 14no dataMar 22no data
1958Mar 20Nov 19Mar 14Nov 28
1957Apr 13no dataApr 13no data
1956Mar 16Nov 9Mar 16Nov 9
1955Mar 27Nov 3Mar 27Nov 3
1954Apr 1no dataMar 15no data
1953no dataNov 9no dataDec 13
1952Mar 28no dataMar 23no data
1951Apr 17Nov 2Mar 15Nov 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.