Molalla 7NE, OR: frost dates by year

Last spring and first fall frost at NOAA station USC00355681, 2006 to 2025, measured from daily minimum temperatures.

Elevation 647 ft, 45.178, -122.506. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 29	Nov 18
Earliest	Feb 14 (2025)	Oct 25 (2020)
Latest	Apr 20 (2008)	Dec 13 (2012)
Trend	14.5 days earlier per decade	3.0 days earlier per decade
Years with data	19	20

At 28°F (hard freeze) the median last spring date is Feb 16 and the median first fall date is Nov 22.

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	Feb 14	Nov 19	Feb 14	none
2024	Mar 14	Nov 28	Mar 6	Dec 2
2023	Mar 29	Oct 27	Feb 25	Nov 25
2022	Apr 15	Nov 6	Mar 10	Nov 17
2021	Apr 11	Nov 17	Feb 13	Dec 27
2020	Mar 17	Oct 25	Feb 18	Oct 26
2019	Mar 11	Oct 27	Mar 11	Oct 30
2018	Apr 3	Nov 8	Feb 23	Dec 5
2017	Mar 19	Nov 19	Jan 17	Nov 19
2016	Mar 17	Dec 5	Jan 3	Dec 7
2015	Mar 4	Nov 21	Jan 2	Nov 26
2014	Mar 22	Nov 12	Feb 8	Nov 12
2013	Mar 23	Nov 19	Jan 22	Nov 20
2012	Apr 7	Dec 13	Mar 7	none
2011	Apr 12	Nov 2	Feb 26	Nov 20
2010	Apr 10	Nov 20	none	Nov 22
2009	Apr 4	Dec 2	Mar 12	Dec 4
2008	Apr 20	Nov 23	Jan 25	Dec 14
2007	Apr 3	Nov 2	Feb 2	Nov 23
2006	no data	Oct 31	no data	Oct 31

"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.