All-time weather records — Snohomish, WA

Record high
100.9°F
June 29, 2021
Record low
0.0°F
January 1, 1996
Wettest day
3.62 in
November 25, 1990

Climate change signal in Snohomish

19.1%

of Snohomish's all-time daily heat records were set in the last decade (70 of 366 records since 2015).

0.5%

of all-time daily cold records were set in the last decade (2 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1890s
·
·
1910s
10
115
1920s
12
33
1930s
30
36
1940s
30
22
1950s
30
45
1960s
29
29
1970s
23
32
1980s
34
12
1990s
35
28
2000s
43
10
2010s
53
3
2020s
37
1

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1915, the latest in 2025. Period of observation: 1894-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 72.0°F — Jan 31, 1935 0.0°F — Jan 1, 1996 2.33 in — Jan 18, 1986
February 73.9°F — Feb 28, 1986 0.0°F — Feb 16, 1998 2.41 in — Feb 2, 1916
March 82.0°F — Mar 30, 2004 10.0°F — Mar 4, 1955 2.00 in — Mar 24, 2018
April 87.1°F — Apr 19, 2016 23.0°F — Apr 3, 1918 1.40 in — Apr 28, 1967
May 93.0°F — May 18, 2008 0.0°F — May 1, 1993 2.02 in — May 28, 1948
June 100.9°F — Jun 29, 2021 0.0°F — Jun 3, 1995 2.05 in — Jun 1, 1944
July 93.0°F — Jul 7, 1958 37.0°F — Jul 6, 1916 1.60 in — Jul 1, 1954
August 100.0°F — Aug 17, 2020 0.0°F — Aug 27, 1994 1.70 in — Aug 26, 1960
September 90.0°F — Sep 1, 2022 0.0°F — Sep 1, 1997 2.39 in — Sep 15, 1926
October 82.9°F — Oct 9, 1934 0.0°F — Oct 27, 1996 1.95 in — Oct 5, 1990
November 73.9°F — Nov 2, 1981 0.0°F — Nov 14, 1993 3.62 in — Nov 25, 1990
December 66.0°F — Dec 16, 1980 0.0°F — Dec 3, 1995 2.52 in — Dec 3, 2007

Click a month to see every daily record for that month in Snohomish.