Washington State Records
Extreme Days
- Hottest temperature ever recorded: 120°F at Hanford on 29 June 2021.
- 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.
Extremes for Towns and Cities (1991-2020 Averages)
- Warmest (annual): Priest Rapids Dam (average annual temperature 56.0°F)
- Warmest (month): Smyrna (average July max temperature 92.9°F)
- Coldest (annual): Rainier Paradise RS (average annual temperature 39.4°F)
- Coldest (month): Winthrop (average January min temperature 15.4°F)
- Wettest (annual): Forks (109.3”)
- Wettest (month): Forks (average January precipitation: 18.08”)
- Driest (annual): Sunnyside (8.07”)
- Driest (month): Richland (average July precipitation: 0.18”)