Office of the Washington State Climatologist

Washington State Records

Extreme Days

  • Hottest temperature ever recorded: 118°F at Ice Harbor Dam on 5 August 1961 and at Wahluke on 24 July 1928.
  • Lowest temperature ever recorded: -48°F at Mazama and Winthrop on 30 December 1968.
  • Most rain in 24 hours: 14.26″ at Mt. Mitchell #2, 23-24 November 1986.
  • Most snow in 24 hours: 65″ at Crystal Mountain on 24 February 1994.
  • Maximum snow depth: 367″ at Rainier Paradise on 9 & 10 March 1956.

Extreme Seasons & Years

  • Wettest year at a station: 185″ at Wynoochee Oxbow in 1931.
  • Driest year at a station: 2.61″ at Wahluke in 1930.
  • Most snowfall in 12 months: 1140″ (95ft, U.S. record) at Mt Baker ski area, 1998-99.
  • Most rainy days in a row: 58 at Centralia 1W, January 29, 1961-March 27, 1961.
  • Most dry days in a row: 140 at White Swan, April-September 1973.
  • Warmest year statewide: 2015 (50.0°F).
  • Coldest year statewide: 1955 (44.8°F).

Extremes for Towns & Cities (1981-2010 Averages)*

  • Warmest (annual): Vancouver (average annual temperature 54.1°F).
  • Warmest (month): Pasco (average July max temperature 91.3°F).
  • Coldest (annual): Republic (average annual temperature 43.9°F).
  • Coldest (month): Winthrop (average December min temperature 14.4°F).
  • Wettest (annual): Forks (119.7″)
  • Wettest (month): Baring (average November precipitation: 18.94″).
  • Driest (annual): Sunnyside (7.50″).
  • Driest (month): Goldendale (average July precipitation: 0.10″).

*Data

Links of Interest
Top 10 Weather Events of the 20th Century
Climate Extremes for all 50 States