Hugo, OK: frost dates by year

Last spring and first fall frost at NOAA station USC00344384, 1951 to 1998, measured from daily minimum temperatures.

Elevation 520 ft, 34.021, -95.538. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 24	Nov 8
Earliest	Mar 3 (1972)	Oct 10 (1979)
Latest	Apr 29 (1968)	Dec 5 (1973)
Trend	1.7 days earlier per decade	1.5 days later per decade
Years with data	48	45

At 28°F (hard freeze) the median last spring date is Mar 10 and the median first fall date is Nov 15.

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
1998	Mar 20	no data	Mar 12	no data
1997	Apr 14	Nov 14	Feb 11	Nov 15
1996	Mar 25	Nov 24	Mar 24	Nov 25
1995	Mar 10	Nov 4	Mar 8	Nov 4
1994	Apr 7	Nov 29	Mar 10	Nov 29
1993	Mar 13	Oct 30	Mar 13	Oct 30
1992	Mar 23	Nov 5	Mar 11	Nov 5
1991	Mar 15	Nov 1	Feb 26	Nov 2
1990	Mar 21	Nov 28	Feb 17	Dec 4
1989	Apr 11	Oct 19	Mar 8	Nov 17
1988	Mar 19	Nov 17	Mar 19	Nov 28
1987	Apr 3	Nov 11	Mar 31	Dec 15
1986	Mar 23	Nov 13	Mar 1	Nov 13
1985	Mar 6	Nov 20	Feb 15	Nov 20
1984	Mar 20	Nov 21	Mar 10	Nov 22
1983	Mar 28	Nov 11	Mar 11	Nov 24
1982	Mar 7	Nov 4	Feb 11	Nov 5
1981	Mar 19	Oct 23	Feb 15	Oct 24
1980	Mar 19	Oct 25	Mar 19	Oct 25
1979	Mar 24	Oct 10	Mar 5	Nov 23
1978	Mar 26	Nov 8	Mar 10	Nov 28
1977	Mar 22	Nov 10	Feb 27	Nov 10
1976	Mar 13	Oct 20	Feb 22	Nov 5
1975	Apr 3	Nov 13	Apr 3	Nov 23
1974	Mar 24	no data	Mar 24	no data
1973	Apr 10	Dec 5	Feb 19	Dec 7
1972	Mar 3	Nov 22	Mar 2	Nov 22
1971	Mar 26	Nov 7	Mar 20	none
1970	Apr 2	Nov 16	Mar 13	Nov 16
1969	Mar 26	Nov 14	Mar 11	Nov 15
1968	Apr 29	Nov 6	Apr 12	Nov 12
1967	Mar 9	Nov 4	Mar 8	Nov 4
1966	Mar 25	Oct 20	Mar 7	Nov 2
1965	Mar 27	no data	Mar 26	no data
1964	Apr 9	Nov 20	Mar 26	Nov 21
1963	Mar 6	Nov 2	Mar 6	Nov 14
1962	Apr 2	Nov 9	Mar 16	Dec 6
1961	Mar 10	Nov 4	Feb 4	Nov 29
1960	Mar 18	Nov 10	Mar 18	Nov 10
1959	Mar 22	Nov 6	Feb 21	Nov 6
1958	Mar 20	Nov 18	Mar 14	Nov 28
1957	Apr 13	Oct 26	Mar 8	Oct 26
1956	Mar 13	Nov 9	Feb 10	Nov 9
1955	Mar 29	Nov 3	Mar 27	Nov 9
1954	Apr 1	Nov 2	Mar 15	Dec 7
1953	Apr 19	Nov 9	Feb 23	Dec 10
1952	Mar 25	Oct 29	Mar 25	Nov 11
1951	Apr 17	Nov 2	Mar 15	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.