Tarkio, MO: frost dates by year

Last spring and first fall frost at NOAA station USW00014945, 1951 to 2007, measured from daily minimum temperatures.

Elevation 1,045 ft, 40.434, -95.388. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 23	Oct 8
Earliest	Apr 6 (1977)	Sep 19 (1991)
Latest	May 15 (1959)	Oct 31 (1971)
Trend	1.9 days earlier per decade	0.6 days later per decade
Years with data	38	37

At 28°F (hard freeze) the median last spring date is Apr 10 and the median first fall date is Oct 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)

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
2007	Apr 10	Oct 24	Apr 10	Oct 27
2006	Apr 9	Oct 12	Mar 27	Oct 13
2004	May 3	Oct 2	Apr 12	Nov 3
2003	Apr 11	Oct 17	Apr 10	Nov 6
2002	Apr 7	Oct 13	Apr 5	Oct 31
1998	Apr 23	Oct 23	Mar 24	Oct 23
1993	Apr 23	no data	Apr 10	no data
1992	May 6	Oct 11	Apr 23	Oct 17
1991	no data	Sep 19	no data	Sep 19
1988	Apr 28	Oct 5	Apr 27	Oct 28
1987	Apr 12	Oct 3	Apr 5	Oct 7
1985	Apr 9	no data	Apr 9	no data
1978	Apr 21	no data	Mar 27	no data
1977	Apr 6	Oct 3	Apr 6	Oct 12
1976	May 8	Oct 6	May 3	Oct 8
1975	Apr 20	Oct 1	Apr 20	Oct 16
1974	Apr 17	Sep 29	Apr 8	Oct 1
1973	Apr 13	Oct 29	Apr 13	Oct 29
1972	Apr 9	Sep 30	Apr 8	Oct 19
1971	May 3	Oct 31	Apr 6	Oct 31
1970	May 2	Oct 10	Apr 9	Oct 16
1969	Apr 29	Oct 14	Apr 6	Oct 14
1968	May 5	Oct 4	Apr 5	Oct 4
1967	May 3	Sep 28	Apr 24	Oct 19
1966	May 9	Oct 16	Apr 21	Oct 16
1965	Apr 28	Sep 24	Mar 30	Oct 24
1964	Apr 9	Sep 28	Apr 8	Oct 9
1963	Apr 23	Oct 29	Apr 4	Oct 29
1962	Apr 17	Oct 24	Apr 15	Oct 25
1961	May 2	Sep 28	May 2	Oct 20
1960	Apr 30	Oct 19	Apr 10	Oct 19
1959	May 15	Oct 9	Apr 13	Oct 28
1958	Apr 29	Oct 1	Apr 29	Oct 26
1957	Apr 14	Oct 18	Apr 14	Oct 25
1956	Apr 24	Oct 26	Apr 24	Nov 8
1955	Apr 7	Oct 8	Mar 28	Oct 24
1954	May 5	Oct 16	May 4	Oct 30
1953	Apr 27	Sep 22	Apr 20	Oct 27
1952	Apr 15	Oct 6	Apr 10	Oct 6
1951	no data	Sep 28	no data	Sep 28

"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.