All-time weather records — Deer Park, WA

Record high
111.0°F
June 29, 2021
Record low
-27.9°F
January 5, 2004
Wettest day
2.01 in
January 10, 2006

Climate change signal in Deer Park

52.2%

of Deer Park's all-time daily heat records were set in the last decade (191 of 366 records since 2015).

26.2%

of all-time daily cold records were set in the last decade (96 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 #
1990s
11
15
2000s
118
182
2010s
118
119
2020s
119
50

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 1999, the latest in 2026. Period of observation: 1998-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 54.0°F — Jan 26, 2003 -27.9°F — Jan 5, 2004 2.01 in — Jan 10, 2006
February 60.1°F — Feb 28, 2020 -13.9°F — Feb 21, 2018 1.21 in — Feb 28, 2022
March 73.9°F — Mar 26, 2025 -11.9°F — Mar 11, 2009 1.15 in — Mar 27, 2005
April 84.9°F — Apr 20, 2016 12.9°F — Apr 1, 2008 1.24 in — Apr 13, 2000
May 91.0°F — May 16, 2006 18.1°F — May 1, 2013 1.21 in — May 17, 2019
June 111.0°F — Jun 29, 2021 30.0°F — Jun 9, 2012 1.72 in — Jun 25, 1999
July 106.0°F — Jul 21, 2024 32.0°F — Jul 11, 2008 0.92 in — Jul 9, 2005
August 105.1°F — Aug 10, 2018 30.9°F — Aug 29, 2010 1.28 in — Aug 24, 2004
September 100.0°F — Sep 2, 2025 18.0°F — Sep 23, 2000 1.04 in — Sep 8, 2003
October 82.9°F — Oct 6, 2022 0.0°F — Oct 31, 2002 1.30 in — Oct 13, 2016
November 64.0°F — Nov 8, 2016 -17.0°F — Nov 23, 2010 1.15 in — Nov 19, 2012
December 59.0°F — Dec 1, 2021 -17.0°F — Dec 20, 2008 1.47 in — Dec 27, 2022

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