All-time weather records — Duvall, WA

Record high
102.0°F
July 29, 2009
Record low
-2.9°F
January 18, 1950
Wettest day
6.39 in
February 22, 1984

Climate change signal in Duvall

10.1%

of Duvall's all-time daily heat records were set in the last decade (37 of 366 records since 2015).

7.4%

of all-time daily cold records were set in the last decade (27 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 #
1920s
1
7
1930s
46
86
1940s
57
30
1950s
58
53
1960s
39
44
1970s
24
39
1980s
43
27
1990s
30
19
2000s
26
18
2010s
17
26
2020s
25
17

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 1929, the latest in 2025. Period of observation: 1929-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 72.0°F — Jan 31, 1935 -2.9°F — Jan 18, 1950 3.92 in — Jan 18, 1986
February 75.0°F — Feb 27, 1986 -2.0°F — Feb 1, 1950 6.39 in — Feb 22, 1984
March 79.0°F — Mar 29, 2004 12.0°F — Mar 3, 1989 2.06 in — Mar 26, 1988
April 88.0°F — Apr 18, 2016 23.0°F — Apr 26, 1935 1.89 in — Apr 23, 1996
May 93.9°F — May 21, 1963 27.0°F — May 26, 2010 1.58 in — May 28, 2006
June 100.0°F — Jun 23, 1984 34.0°F — Jun 1, 1939 2.55 in — Jun 7, 1985
July 102.0°F — Jul 29, 2009 33.1°F — Jul 20, 1934 1.62 in — Jul 1, 1954
August 100.9°F — Aug 9, 1931 35.1°F — Aug 24, 2010 1.94 in — Aug 27, 1980
September 97.0°F — Sep 14, 1979 30.0°F — Sep 13, 1970 2.20 in — Sep 5, 1931
October 88.0°F — Oct 1, 1987 0.0°F — Oct 1, 1998 3.12 in — Oct 20, 2003
November 77.0°F — Nov 4, 1980 1.0°F — Nov 23, 1985 2.50 in — Nov 25, 1962
December 66.0°F — Dec 4, 1939 1.0°F — Dec 21, 1990 3.94 in — Dec 3, 2007

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