Portageville, MO: frost dates by year

Last spring and first fall frost at NOAA station USC00236804, 1965 to 2011, measured from daily minimum temperatures.

Elevation 280 ft, 36.414, -89.700. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 31	Oct 31
Earliest	Mar 4 (2009)	Oct 3 (1981)
Latest	Apr 20 (1983)	Nov 27 (2009)
Trend	2.2 days earlier per decade	3.6 days later per decade
Years with data	42	42

At 28°F (hard freeze) the median last spring date is Mar 16 and the median first fall date is Nov 16.

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
2011	Mar 12	Nov 11	Feb 13	Nov 30
2010	Mar 21	Nov 6	Mar 5	Nov 6
2009	Mar 4	Nov 27	Mar 3	Dec 4
2008	Apr 15	Oct 28	Mar 9	Nov 18
2007	Apr 9	Nov 7	Apr 8	Nov 24
2006	Mar 26	Oct 14	Feb 27	Nov 21
2005	Mar 15	Nov 17	Mar 14	Nov 17
2004	Mar 10	Nov 25	Feb 27	Dec 14
2003	Mar 30	Nov 14	Mar 11	Nov 25
2002	Apr 5	Nov 17	Mar 24	Nov 27
2001	Mar 27	Oct 27	Mar 27	Dec 20
2000	Mar 12	Oct 8	Mar 12	Nov 15
1999	Mar 27	Oct 24	Mar 4	Nov 30
1998	Mar 14	Nov 6	Mar 13	Dec 22
1997	Apr 10	Nov 4	Mar 16	Nov 16
1996	Apr 6	Nov 2	Mar 27	Nov 3
1995	Apr 1	Nov 4	Mar 10	Nov 4
1994	Apr 7	Nov 23	Mar 11	Dec 11
1993	Mar 19	Oct 30	Mar 15	Nov 1
1992	Apr 3	Nov 7	Mar 23	Nov 7
1991	Apr 1	Oct 16	Mar 30	Nov 2
1990	Apr 12	Nov 6	Mar 20	Dec 5
1989	Apr 11	Oct 20	Mar 10	Nov 3
1988	Mar 19	no data	Mar 16	no data
1987	Apr 4	Oct 8	Mar 31	Nov 11
1986	no data	Nov 12	no data	Nov 13
1983	Apr 20	Nov 12	Mar 25	Dec 1
1981	Mar 20	Oct 3	Mar 9	Oct 24
1980	Mar 18	no data	Mar 14	no data
1979	Mar 26	Oct 14	Mar 25	Nov 11
1978	Mar 18	Oct 8	Mar 18	Dec 4
1977	Mar 22	Oct 13	Feb 28	Nov 26
1976	Mar 17	Oct 18	Mar 17	Oct 28
1975	Apr 5	Nov 14	Mar 16	Nov 14
1974	Apr 10	Oct 21	Mar 26	Oct 21
1973	Apr 11	Nov 6	Apr 11	Nov 10
1972	Apr 9	Oct 26	Mar 30	Nov 16
1971	Apr 7	Nov 4	Mar 24	Nov 7
1970	Mar 27	Oct 17	Mar 16	Nov 16
1969	Mar 31	Oct 28	Mar 15	Nov 14
1968	Apr 6	Oct 25	Mar 24	Nov 10
1967	Mar 20	Oct 28	Mar 19	Nov 6
1966	Apr 10	Nov 2	Mar 29	Nov 3
1965	no data	Oct 25	no data	Nov 30

"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.