Last Frost Day

Frost history / Miami, OK

Miami, OK: frost dates by year

Last spring and first fall frost at NOAA station USC00345855, 1951 to 2014, measured from daily minimum temperatures.

Elevation 805 ft, 36.883, -94.883. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianApr 10Oct 26
EarliestMar 21 (1967)Sep 29 (1984)
LatestMay 3 (1976)Nov 17 (1988)
Trend0.8 days earlier per decadelittle change (less than half a day per decade)
Years with data4247

At 28°F (hard freeze) the median last spring date is Mar 29 and the median first fall date is Nov 6.

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 151960197019801990200020101952: Apr 101953: Apr 201954: Apr 11955: Mar 291956: Apr 171957: Apr 141958: Mar 311959: Apr 141960: Mar 251961: Apr 171962: Apr 131963: Mar 221964: Apr 91966: Apr 211967: Mar 211968: Apr 51969: Mar 301970: Apr 141971: Apr 141972: Apr 41973: Apr 111974: Apr 151975: Apr 121976: May 31977: Apr 61978: Apr 211979: Apr 281980: Apr 151981: Apr 51983: Apr 191984: Apr 171985: Apr 81986: Apr 211987: Apr 51988: Mar 301989: Apr 111990: Mar 261992: Apr 31993: Apr 21994: Apr 81995: Mar 302004: Mar 22

First fall frost (32°F)

Sep 12Sep 27Oct 12Oct 27Nov 11Nov 261960197019801990200020101951: Nov 11952: Oct 71953: Nov 91954: Oct 301955: Oct 241956: Nov 81957: Oct 261958: Oct 271959: Nov 51960: Oct 201961: Oct 261962: Nov 41963: Oct 291964: Oct 91965: Oct 121966: Oct 161967: Oct 191968: Oct 281969: Oct 281970: Nov 21971: Nov 71972: Oct 191973: Nov 61974: Nov 61975: Oct 191976: Oct 171977: Oct 121978: Oct 71979: Oct 101981: Oct 231982: Oct 191983: Nov 101984: Sep 291985: Sep 301986: Nov 91987: Oct 121988: Nov 171989: Oct 191990: Oct 301991: Nov 11992: Nov 41993: Oct 101995: Oct 211996: Nov 21997: Nov 22013: Oct 192014: 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
2014no dataNov 1no dataNov 1
2013no dataOct 19no dataNov 3
2004Mar 22no dataFeb 26no data
1997no dataNov 2no dataNov 11
1996no dataNov 2no dataNov 3
1995Mar 30Oct 21Mar 10Oct 21
1994Apr 8no dataApr 7no data
1993Apr 2Oct 10Apr 2Oct 30
1992Apr 3Nov 4Apr 3Nov 5
1991no dataNov 1no dataNov 2
1990Mar 26Oct 30Mar 25Nov 28
1989Apr 11Oct 19Apr 11Oct 20
1988Mar 30Nov 17Mar 19Nov 21
1987Apr 5Oct 12Apr 5Nov 11
1986Apr 21Nov 9Mar 21Nov 10
1985Apr 8Sep 30Mar 31Nov 6
1984Apr 17Sep 29Mar 19Sep 29
1983Apr 19Nov 10Apr 15Nov 13
1982no dataOct 19no dataOct 21
1981Apr 5Oct 23Mar 19Nov 10
1980Apr 15no dataApr 15no data
1979Apr 28Oct 10Mar 26Nov 10
1978Apr 21Oct 7Mar 25Nov 28
1977Apr 6Oct 12Mar 22Nov 10
1976May 3Oct 17Mar 31Oct 21
1975Apr 12Oct 19Apr 3Nov 13
1974Apr 15Nov 6Mar 26Nov 14
1973Apr 11Nov 6Mar 21Nov 10
1972Apr 4Oct 19Apr 4Nov 21
1971Apr 14Nov 7Apr 7Nov 7
1970Apr 14Nov 2Apr 2Nov 5
1969Mar 30Oct 28Mar 30Oct 28
1968Apr 5Oct 28Apr 5Nov 12
1967Mar 21Oct 19Mar 18Nov 4
1966Apr 21Oct 16Mar 28Nov 2
1965no dataOct 12no dataNov 29
1964Apr 9Oct 9Mar 31Nov 20
1963Mar 22Oct 29Mar 7Nov 13
1962Apr 13Nov 4Apr 2Nov 5
1961Apr 17Oct 26Feb 25Nov 6
1960Mar 25Oct 20Mar 25Oct 20
1959Apr 14Nov 5Mar 22Nov 6
1958Mar 31Oct 27Mar 20Nov 26
1957Apr 14Oct 26Apr 13Oct 26
1956Apr 17Nov 8Mar 30Nov 9
1955Mar 29Oct 24Mar 28Nov 3
1954Apr 1Oct 30Apr 1Nov 2
1953Apr 20Nov 9Apr 20Nov 9
1952Apr 10Oct 7Mar 27Oct 7
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.