California, MO: frost dates by year

Last spring and first fall frost at NOAA station USC00231189, 1955 to 2021, measured from daily minimum temperatures.

Elevation 879 ft, 38.628, -92.557. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 9	Oct 25
Earliest	Mar 6 (2012)	Sep 30 (1984)
Latest	May 4 (2013)	Nov 13 (2016)
Trend	little change (less than half a day per decade)	little change (less than half a day per decade)
Years with data	53	52

At 28°F (hard freeze) the median last spring date is Apr 1 and the median first fall date is Nov 2.

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)

First fall frost (32°F)

Dots are single years. The gray line is the median, the green line the fitted trend.

Year by year

Year	Last spring 32°F	First fall 32°F	Last spring 28°F	First fall 28°F
2021	Apr 22	Nov 3	Apr 1	Nov 19
2020	Apr 18	Oct 16	Apr 18	Oct 30
2019	Apr 14	Oct 12	Mar 17	Oct 31
2018	no data	Oct 16	no data	Oct 21
2017	Mar 16	Oct 30	Mar 16	Oct 31
2016	Apr 10	Nov 13	Apr 9	Nov 19
2015	Apr 5	Oct 30	Apr 5	Nov 21
2014	Apr 16	Nov 1	Apr 15	Nov 1
2013	May 4	Oct 23	Apr 20	Oct 25
2012	Mar 6	no data	Mar 5	no data
2011	Apr 5	Oct 29	Mar 28	Nov 11
2010	Mar 26	Oct 29	Mar 5	Oct 29
2009	Apr 11	Oct 18	Apr 8	Nov 27
2008	Apr 29	Oct 27	Mar 25	Oct 28
2007	Apr 14	Oct 28	Apr 9	Nov 1
2006	Mar 26	Oct 13	Mar 26	Oct 24
2005	Mar 23	Oct 26	Mar 20	Nov 16
2004	Apr 13	Nov 6	Mar 21	Nov 25
2003	Apr 10	Nov 6	Mar 30	Nov 7
2002	Apr 5	Nov 1	Apr 5	Nov 1
2001	Apr 19	Oct 17	Mar 27	Oct 27
2000	Apr 8	Oct 7	Mar 28	Oct 9
1999	Mar 26	Oct 18	Mar 16	Oct 24
1998	Mar 25	Nov 6	Mar 21	Nov 6
1997	Apr 17	Oct 27	Apr 14	Nov 4
1996	Apr 9	Oct 31	Apr 6	Nov 2
1995	Apr 6	Oct 21	Apr 5	Nov 3
1994	Apr 8	Oct 25	Apr 7	Nov 23
1993	Mar 20	Oct 10	Mar 18	Oct 30
1992	Apr 3	Nov 3	Apr 3	Nov 14
1991	Mar 30	Oct 7	Mar 30	Nov 2
1990	Apr 12	Oct 19	Apr 12	Oct 22
1989	Apr 12	Oct 20	Apr 12	Oct 20
1988	Mar 30	Oct 26	Mar 30	Nov 17
1987	Apr 5	Oct 8	Apr 5	Oct 21
1986	Apr 22	Nov 10	Mar 21	Nov 11
1985	Apr 9	Oct 1	Apr 9	Nov 5
1984	Apr 1	Sep 30	Mar 30	Nov 2
1983	Apr 19	Nov 5	Apr 19	Nov 29
1982	Apr 21	Oct 21	Apr 6	Oct 22
1981	Apr 6	Oct 23	Mar 20	Oct 23
1980	Apr 14	Oct 25	Mar 14	Oct 26
1979	Apr 6	Oct 5	Apr 6	Nov 11
1978	Mar 27	Oct 24	Mar 27	Nov 28
1977	Apr 6	Nov 10	Mar 22	Nov 12
1976	May 3	Oct 17	Mar 17	Oct 17
1975	Apr 12	Nov 13	Apr 4	Nov 13
1974	Apr 9	Nov 13	Apr 9	Nov 14
1973	Apr 13	Oct 30	Apr 11	Nov 5
1972	Apr 8	Oct 19	Apr 4	Oct 19
1958	Mar 26	no data	Mar 22	no data
1957	Apr 14	Oct 25	Apr 13	Oct 25
1956	Apr 24	Nov 8	Apr 24	Nov 16
1955	Mar 29	Nov 3	Mar 28	Nov 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.