Washington Weather Records

7 official all-time records

The official all-time extremes for Washington, as NOAA’s State Climate Extremes Committee lists them: from 120°F at Hanford to -48°F at Mazama.

Maximum Temperature

Record	Date	Where	Station	Status
120°F	June 29, 2021	Hanford	DOE Mesonet H100F	NSA

A heat wave across the Pacific Northwest in late June 2021 broke a number of daily maximum temperature records. In addition, an Washington SCEC determined that a Department of Energy mesonet station, Hanford H100F, reached 120 degrees F, exceeding the previous record of 118 degrees F set at Ice Harbor Dam (COOP ID: 453993) on August 5, 1961 and Wahluke (COOP ID: 458903) on July 24, 1928.

Minimum Temperature

Record	Date	Where	Station	Status
-48°F	December 30, 1968	Mazama	455133	E2
-48°F	December 30, 1968	Winthrop	459376	E2

Greatest 24-Hour Precipitation

Record	Date	Where	Station	Status
14.26 inches	November 23, 1986 to November 24, 1986	Mt. Mitchell #2	455668	E: Value is unchanged from previous extremes tables last updated by NCEI (formerly NCDC) between 1998 and 2006. Value exceeds all other valid values.

Maximum 24-Hour Snowfall

Record	Date	Where	Station	Status
65 inches	February 24, 1994	Crystal Mountain Ski Resort	NWAC	NA

The observation of 65.0 inches of snow that fell in 24 hours at the Crystal Mountain ski resort on February 24, 1994 is archived at the Northwest Weather and Avalanche Center. The greatest 24-hr snow fall observed at an official NOAA weather station in Washington is 52.0 inches observed at Winthrop on January 21, 1935.

Maximum Snow Depth

Record	Date	Where	Station	Status
367 inches	March 10, 1956	Rainier Paradise RS	456898	N1
367 inches	March 9, 1956	Rainier Paradise RS	456898	N1

Every storm in Washington since 1950 Every tornado in Washington Every state

Sources

NOAA National Centers for Environmental Information, State Climate Extremes Committee records.