Last Frost Day

Frost history / Tipton 4S Mesonet, OK

Tipton 4S Mesonet, OK: frost dates by year

Last spring and first fall frost at NOAA station USC00348879, 1951 to 2025, measured from daily minimum temperatures.

Elevation 1,269 ft, 34.440, -99.138. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianApr 7Nov 4
EarliestMar 5 (2012)Oct 7 (1952)
LatestMay 4 (2013)Nov 27 (1965)
Trend0.5 days earlier per decadelittle change (less than half a day per decade)
Years with data4344

At 28°F (hard freeze) the median last spring date is Mar 26 and the median first fall date is Nov 10.

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 30May 1519601970198019902000201020201951: Apr 131952: Apr 101953: Apr 201954: Apr 11955: Apr 71956: Apr 111957: Apr 141958: Apr 111959: Apr 221960: May 11961: Apr 161962: Apr 21963: Mar 221964: Apr 81965: Mar 271966: Apr 61967: Mar 91968: Apr 51969: Apr 61970: Apr 51971: Apr 71972: Apr 41973: Apr 101974: Apr 51975: Apr 121977: Apr 51978: Mar 262010: Apr 82011: Apr 162012: Mar 52013: May 42014: May 12015: Mar 72016: Apr 22017: Mar 152018: Apr 152019: Mar 312020: Apr 152021: Apr 12022: Apr 142023: Apr 162024: Mar 282025: Apr 7

First fall frost (32°F)

Sep 27Oct 12Oct 27Nov 11Nov 26Dec 1119601970198019902000201020201951: Nov 21952: Oct 71953: Nov 91954: Oct 151955: Oct 241956: Nov 91957: Oct 261958: Nov 11959: Nov 51960: Nov 101961: Nov 31962: Nov 41963: Nov 21964: Nov 211965: Nov 271966: Oct 231967: Nov 41968: Oct 281969: Nov 31970: Oct 281971: Nov 71972: Nov 141973: Nov 211974: Nov 251975: Nov 121976: Oct 201978: Nov 72009: Oct 272010: Nov 52011: Nov 32012: Oct 82013: Nov 72014: Nov 112015: Nov 212016: Nov 182017: Oct 272018: Nov 102019: Oct 122020: Oct 262021: Nov 132022: Oct 192023: Oct 302024: Nov 202025: Oct 30

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
2025Apr 7Oct 30Mar 20Oct 30
2024Mar 28Nov 20Mar 10Nov 29
2023Apr 16Oct 30Apr 7Oct 31
2022Apr 14Oct 19Mar 24Nov 12
2021Apr 1Nov 13Mar 19Nov 22
2020Apr 15Oct 26Mar 6Oct 26
2019Mar 31Oct 12Mar 31Oct 12
2018Apr 15Nov 10Apr 15Nov 10
2017Mar 15Oct 27Mar 14Oct 28
2016Apr 2Nov 18Mar 20Nov 19
2015Mar 7Nov 21Mar 7Nov 22
2014May 1Nov 11Apr 15Nov 12
2013May 4Nov 7May 3Nov 12
2012Mar 5Oct 8Mar 4Oct 27
2011Apr 16Nov 3Mar 10Nov 4
2010Apr 8Nov 5Apr 8Nov 5
2009no dataOct 27no dataNov 18
1978Mar 26Nov 7Mar 9Nov 7
1977Apr 5no dataMar 22no data
1976no dataOct 20no dataOct 20
1975Apr 12Nov 12Mar 30Nov 13
1974Apr 5Nov 25Mar 24Nov 25
1973Apr 10Nov 21Apr 10Nov 28
1972Apr 4Nov 14Mar 31Nov 16
1971Apr 7Nov 7Apr 7Nov 19
1970Apr 5Oct 28Apr 5Nov 3
1969Apr 6Nov 3Mar 26Nov 19
1968Apr 5Oct 28Mar 23Nov 11
1967Mar 9Nov 4Mar 9Dec 3
1966Apr 6Oct 23Apr 6Nov 2
1965Mar 27Nov 27Mar 27Nov 29
1964Apr 8Nov 21Mar 26Nov 21
1963Mar 22Nov 2Mar 14Nov 18
1962Apr 2Nov 4Apr 2Nov 20
1961Apr 16Nov 3Mar 1Nov 3
1960May 1Nov 10Mar 18Nov 10
1959Apr 22Nov 5Apr 13Nov 6
1958Apr 11Nov 1Mar 18Nov 18
1957Apr 14Oct 26Apr 14Oct 26
1956Apr 11Nov 9Apr 11Nov 9
1955Apr 7Oct 24Mar 28Nov 3
1954Apr 1Oct 15Apr 1Oct 30
1953Apr 20Nov 9Apr 20Nov 9
1952Apr 10Oct 7Mar 24Nov 10
1951Apr 13Nov 2Apr 13Nov 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.