Last Frost Day

Frost history / Santa Barbara Muni Ap, CA

Santa Barbara Muni Ap, CA: frost dates by year

Last spring and first fall frost at NOAA station USW00023190, 1951 to 2024, measured from daily minimum temperatures.

Elevation 9 ft, 34.426, -119.843. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianFeb 3Dec 7
EarliestJan 1 (2015)Oct 29 (1971)
LatestMar 14 (2005)Dec 28 (1969)
Trend0.9 days earlier per decadelittle change (less than half a day per decade)
Years with data69, 25 with no freeze71, 22 with no freeze

At 28°F (hard freeze) the median last spring date is Jan 14 and the median first fall date is Dec 20.

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)

Dec 16Dec 31Jan 15Jan 30Feb 14Mar 1Mar 16Mar 3119601970198019902000201020201951: Feb 281952: Jan 101953: Mar 31954: Mar 141955: Jan 81957: Jan 311960: Jan 171961: Feb 271962: Feb 271963: Jan 221966: Mar 31968: Jan 301970: Jan 61971: Mar 31972: Feb 31973: Jan 71974: Jan 31975: Jan 291976: Jan 211979: Jan 291982: Jan 221985: Feb 51987: Feb 271988: Feb 61989: Feb 141990: Feb 161991: Jan 221992: Jan 121993: Jan 31994: Feb 121999: Feb 122002: Feb 42004: Feb 112005: Mar 142006: Feb 202007: Jan 242009: Jan 52013: Jan 172015: Jan 12016: Jan 12018: Feb 282019: Feb 112020: Feb 42023: Feb 16

First fall frost (32°F)

Oct 12Oct 27Nov 11Nov 26Dec 11Dec 26Jan 1019601970198019902000201020201951: Dec 91953: Dec 231954: Dec 271956: Nov 211958: Nov 171959: Dec 61960: Dec 71962: Dec 251964: Nov 211965: Dec 191966: Dec 281967: Dec 131968: Dec 51969: Dec 281971: Oct 291972: Dec 91974: Dec 231975: Nov 191978: Dec 61979: Nov 211982: Dec 251984: Dec 151985: Dec 101987: Dec 141988: Nov 201989: Nov 281990: Nov 271991: Dec 11992: Dec 191993: Dec 211994: Nov 231998: Dec 72000: Nov 122001: Dec 162003: Nov 232004: Nov 292005: Dec 62006: Nov 292007: Dec 32008: Dec 272009: Dec 82010: Nov 302011: Dec 242012: Dec 202013: Dec 62015: Dec 152016: Dec 192017: Dec 52020: Nov 28

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
2024nonenonenonenone
2023Feb 16nonenonenone
2022nonenonenonenone
2021nonenonenonenone
2020Feb 4Nov 28nonenone
2019Feb 11nonenonenone
2018Feb 28nonenonenone
2017noneDec 5nonenone
2016Jan 1Dec 19nonenone
2015Jan 1Dec 15nonenone
2014nonenonenonenone
2013Jan 17Dec 6Jan 14none
2012noneDec 20nonenone
2011noneDec 24nonenone
2010noneNov 30nonenone
2009Jan 5Dec 8nonenone
2008noneDec 27nonenone
2007Jan 24Dec 3Jan 19none
2006Feb 20Nov 29noneDec 19
2005Mar 14Dec 6nonenone
2004Feb 11Nov 29nonenone
2003noneNov 23noneDec 16
2002Feb 4nonenonenone
2001no dataDec 16no datanone
2000no dataNov 12no datanone
1999Feb 12nonenonenone
1998no dataDec 7no dataDec 21
1995noneno datanoneno data
1994Feb 12Nov 23nonenone
1993Jan 3Dec 21nonenone
1992Jan 12Dec 19nonenone
1991Jan 22Dec 1nonenone
1990Feb 16Nov 27Feb 15Dec 22
1989Feb 14Nov 28Feb 6none
1988Feb 6Nov 20noneDec 27
1987Feb 27Dec 14Jan 18Dec 25
1986nonenonenonenone
1985Feb 5Dec 10nonenone
1984noneDec 15nonenone
1983nonenonenonenone
1982Jan 22Dec 25Jan 8none
1981nonenonenonenone
1980nonenonenonenone
1979Jan 29Nov 21nonenone
1978noneDec 6nonenone
1977nonenonenonenone
1976Jan 21noneJan 3none
1975Jan 29Nov 19noneDec 16
1974Jan 3Dec 23nonenone
1973Jan 7nonenonenone
1972Feb 3Dec 9nonenone
1971Mar 3Oct 29nonenone
1970Jan 6nonenonenone
1969noneDec 28nonenone
1968Jan 30Dec 5noneDec 21
1967noneDec 13noneDec 13
1966Mar 3Dec 28nonenone
1965noneDec 19nonenone
1964noneNov 21nonenone
1963Jan 22noneJan 13none
1962Feb 27Dec 25noneDec 26
1961Feb 27noneJan 6none
1960Jan 17Dec 7Jan 2none
1959noneDec 6nonenone
1958noneNov 17nonenone
1957Jan 31nonenonenone
1956noneNov 21noneDec 9
1955Jan 8nonenonenone
1954Mar 14Dec 27nonenone
1953Mar 3Dec 23nonenone
1952Jan 10nonenonenone
1951Feb 28Dec 9noneDec 10

"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.