Drain, OR: frost dates by year

Last spring and first fall frost at NOAA station USC00352406, 1951 to 2025, measured from daily minimum temperatures.

Elevation 292 ft, 43.659, -123.325. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 20	Oct 28
Earliest	Feb 9 (1980)	Sep 12 (1970)
Latest	Jun 1 (1966)	Dec 9 (2005)
Trend	3.9 days earlier per decade	2.1 days later per decade
Years with data	67	69, 2 with no freeze

At 28°F (hard freeze) the median last spring date is Mar 7 and the median first fall date is Nov 19.

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
2025	Apr 5	none	Feb 13	none
2024	Apr 17	Dec 1	Jan 17	none
2023	Mar 17	Oct 28	Mar 16	Oct 29
2020	Apr 15	no data	Feb 18	no data
2017	no data	Oct 9	no data	Nov 1
2016	Feb 23	Dec 7	Jan 4	Dec 8
2015	Apr 16	Nov 22	Mar 5	Nov 26
2014	Mar 24	Nov 12	Mar 23	Nov 12
2013	Mar 25	Oct 29	Mar 4	Nov 21
2012	Apr 7	none	Feb 7	none
2011	May 1	Oct 25	Feb 27	Dec 6
2010	Apr 9	Nov 23	Mar 19	none
2009	Apr 25	Oct 7	Mar 13	Oct 12
2008	Apr 20	Oct 11	Apr 3	Oct 12
2007	Apr 20	Oct 27	Feb 3	Nov 22
2006	Apr 23	Oct 10	Mar 13	Oct 31
2005	Apr 13	Dec 9	Mar 15	Dec 9
2004	Apr 3	Nov 20	Jan 6	none
2003	May 19	Oct 31	Feb 26	Oct 31
2002	May 9	Oct 11	Mar 8	Oct 12
2001	Apr 5	Nov 7	Feb 28	Dec 26
2000	Mar 31	Sep 23	Jan 30	Nov 12
1999	Apr 14	Oct 15	Mar 7	Oct 17
1998	Apr 26	Oct 20	Mar 29	Dec 19
1997	Apr 12	Dec 3	Apr 5	Dec 12
1996	May 5	Nov 9	Mar 26	Dec 18
1995	Apr 10	Nov 2	Mar 1	Nov 2
1994	Mar 26	Oct 13	Feb 8	Dec 5
1993	Feb 28	Nov 1	Feb 28	Nov 24
1992	no data	Oct 15	no data	Dec 3
1991	Apr 16	Oct 30	Jan 31	Oct 30
1990	Mar 27	Oct 7	Feb 20	Dec 20
1989	Mar 26	Oct 15	Feb 15	none
1988	Apr 24	Nov 19	Mar 14	Dec 15
1987	Apr 21	Oct 16	Feb 26	none
1986	Apr 24	Nov 29	Feb 10	none
1985	May 12	Oct 8	Mar 13	Oct 8
1984	May 6	Dec 5	Jan 20	Dec 5
1983	Apr 12	Sep 30	Jan 3	Dec 21
1981	no data	Nov 5	no data	none
1980	Feb 9	Nov 14	Jan 31	Dec 4
1979	Mar 9	Nov 21	Feb 3	none
1978	May 5	Nov 5	Mar 1	Nov 10
1977	Apr 18	Nov 8	Jan 30	Nov 20
1976	Apr 2	Oct 17	Mar 5	Nov 26
1975	Apr 28	Nov 11	Mar 28	Nov 18
1974	Apr 12	Oct 5	Mar 7	none
1973	Apr 28	Oct 2	Jan 28	Dec 31
1972	May 1	Sep 26	Apr 19	Dec 3
1971	Apr 3	Oct 16	Mar 19	Oct 28
1970	May 7	Sep 12	Apr 17	Sep 14
1969	May 1	Oct 13	Mar 26	Oct 13
1968	May 7	Nov 30	Apr 19	Dec 22
1967	Apr 29	Oct 24	Mar 12	Dec 13
1966	Jun 1	Oct 10	Apr 19	none
1965	May 17	Sep 17	Apr 3	Sep 17
1964	May 24	Nov 13	Apr 19	Nov 16
1963	Apr 20	Oct 19	Mar 13	Dec 10
1962	May 4	Nov 28	Mar 28	Nov 29
1961	Apr 19	Sep 26	Mar 20	Nov 6
1960	Apr 16	Nov 4	Mar 1	Nov 5
1959	Apr 20	Oct 1	Apr 6	Nov 13
1958	May 13	Nov 15	Mar 3	Nov 16
1957	Apr 24	Sep 19	Feb 5	Oct 31
1956	Apr 30	Nov 17	Apr 6	Nov 18
1955	May 22	Nov 12	Apr 5	Nov 13
1954	May 2	Sep 30	May 1	Nov 30
1953	Apr 8	Oct 23	Mar 5	none
1952	May 5	Nov 15	Apr 8	Nov 22
1951	Apr 22	Nov 1	Apr 21	Nov 1

"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.