Tacoma #1, WA: frost dates by year

Last spring and first fall frost at NOAA station USC00458278, 1982 to 2025, measured from daily minimum temperatures.

Elevation 25 ft, 47.247, -122.412. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Mar 16	Nov 10
Earliest	Feb 5 (2007)	Oct 9 (1985)
Latest	Apr 30 (1986)	Dec 22 (2001)
Trend	8.1 days earlier per decade	4.1 days later per decade
Years with data	36	38

At 28°F (hard freeze) the median last spring date is Feb 13 and the median first fall date is Nov 25.

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	Mar 13	Oct 18	Feb 13	none
2024	Mar 7	Dec 1	Jan 16	none
2023	Mar 27	Oct 28	Feb 27	none
2022	Apr 14	Nov 9	Feb 28	Nov 18
2021	Mar 16	Nov 17	Feb 13	Dec 26
2020	Mar 17	Nov 8	none	Dec 12
2019	Mar 11	Oct 30	Mar 6	Nov 29
2018	Feb 23	Nov 9	Feb 23	Dec 5
2017	Feb 25	Dec 5	Jan 15	Dec 9
2016	Feb 24	Dec 7	Jan 3	Dec 17
2015	Mar 4	Nov 20	Jan 2	Nov 26
2014	Feb 9	Nov 13	Feb 9	Nov 14
2013	Mar 24	Nov 21	Jan 22	Nov 21
2012	Mar 19	Nov 10	Jan 13	none
2011	Mar 5	no data	Feb 27	no data
2010	Mar 9	Nov 22	none	Nov 22
2008	Feb 17	Dec 14	Jan 26	Dec 15
2007	Feb 5	Nov 22	Jan 16	none
2005	Feb 24	no data	Feb 21	no data
2004	Feb 10	Nov 20	Jan 7	none
2003	Feb 26	Nov 1	Feb 25	Nov 5
2002	no data	Oct 31	no data	Oct 31
2001	Mar 4	Dec 22	Feb 10	Dec 25
1999	Apr 8	Dec 4	Mar 6	none
1997	no data	Nov 13	no data	none
1996	no data	Nov 18	no data	Nov 23
1995	Mar 26	Oct 30	Mar 3	Nov 1
1994	Mar 23	Nov 3	Mar 23	Nov 18
1993	Mar 16	Nov 7	Mar 2	Nov 14
1992	Mar 28	Nov 10	Jan 20	Nov 24
1991	Apr 11	Oct 30	Jan 30	Oct 30
1990	Mar 13	Nov 18	Feb 19	Dec 19
1989	Mar 20	Oct 29	Mar 4	Dec 11
1988	Mar 28	Nov 14	Feb 2	Nov 30
1987	Mar 29	Nov 17	Feb 25	Nov 17
1986	Apr 30	Nov 10	Feb 20	Dec 3
1985	Apr 21	Oct 9	Mar 10	Nov 12
1984	Apr 26	Oct 19	Jan 20	Dec 2
1983	Apr 14	Oct 12	Feb 5	Nov 30
1982	no data	Oct 18	no data	Nov 11

"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.