All-time weather records — Dayton, OR

Record high
114.1°F
June 28, 2021
Record low
7.2°F
December 9, 2009
Wettest day
3.01 in
November 24, 2016

Climate change signal in Dayton

49.5%

of Dayton's all-time daily heat records were set in the last decade (181 of 366 records since 2015).

31.1%

of all-time daily cold records were set in the last decade (114 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
26
28
2000s
116
176
2010s
122
93
2020s
102
69

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 1998, the latest in 2026. Period of observation: 1997-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 64.9°F — Jan 18, 2005 11.1°F — Jan 13, 2017 2.46 in — Jan 12, 2021
February 68.0°F — Feb 11, 2022 18.1°F — Feb 25, 2023 2.51 in — Feb 5, 2017
March 77.0°F — Mar 25, 2025 24.3°F — Mar 1, 2023 1.76 in — Mar 12, 2012
April 89.1°F — Apr 28, 2023 27.0°F — Apr 7, 2001 1.44 in — Apr 7, 2018
May 97.0°F — May 16, 2008 30.0°F — May 8, 2002 1.07 in — May 14, 2001
June 114.1°F — Jun 28, 2021 36.0°F — Jun 1, 2023 1.39 in — Jun 10, 2022
July 106.0°F — Jul 21, 2006 39.9°F — Jul 15, 2000 0.41 in — Jul 9, 2019
August 107.1°F — Aug 14, 2023 37.9°F — Aug 31, 2008 0.84 in — Aug 22, 2001
September 100.9°F — Sep 2, 2017 32.0°F — Sep 27, 1999 1.67 in — Sep 29, 2013
October 89.1°F — Oct 6, 2014 24.3°F — Oct 31, 2019 1.90 in — Oct 22, 2014
November 73.0°F — Nov 3, 2010 19.0°F — Nov 2, 2002 3.01 in — Nov 24, 2016
December 72.0°F — Dec 28, 1998 7.2°F — Dec 9, 2009 2.73 in — Dec 17, 2015

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