Frost dates in King County, Washington

Evergreen forest with snowy peaks behind in Mount Rainier National Park, Washington — Photo: Kingofthedead, CC BY-SA 4.0, via Wikimedia Commons

The average last spring frost in King County falls Mar 2 to Apr 23 and the average first fall frost Oct 23 to Nov 23, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 8a to 9a. Places: Auburn, Baring, Bellevue, Black Diamond, Bothell, Bryn Mawr-Skyway. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.

ZIP	Place	Last spring frost	First fall frost	Zone
98001	Auburn	Mar 20	Nov 10	8b
98002	Auburn	Mar 20	Nov 10	8b
98003	Federal Way	Mar 8	Nov 14	8b
98004	Bellevue	Mar 8	Nov 23	9a
98005	Bellevue	Mar 8	Nov 23	9a
98006	Bellevue	Mar 13	Nov 16	8b
98007	Bellevue	Mar 8	Nov 23	8b
98008	Bellevue	Mar 8	Nov 23	8b
98010	Black Diamond	Apr 20	Oct 25	8b
98011	Bothell	Mar 8	Nov 23	8b
98014	Lake Marcel-Stillwater	Apr 13	Nov 10	8b
98019	Duvall	Apr 17	Oct 23	8b
98022	Enumclaw	Apr 18	Oct 31	8a
98023	Federal Way	Mar 8	Nov 14	8b
98024	Fall City	Mar 30	Nov 7	8b
98025		Apr 20	Oct 25	8b
98027	Mirrormont	Mar 30	Nov 7	8b
98028	Kenmore	Mar 8	Nov 23	9a
98029	Issaquah	Mar 30	Nov 7	8b
98030	Kent	Mar 20	Nov 10	8b
98031	Kent	Mar 20	Nov 10	8b
98032	Kent	Mar 20	Nov 10	9a
98033	Kirkland	Mar 8	Nov 23	9a
98034	Kirkland	Mar 8	Nov 23	9a
98038	Hobart	Apr 20	Oct 25	8b
98039	Medina	Mar 8	Nov 23	9a
98040	Mercer Island	Mar 13	Nov 17	9a
98042	Lake Morton-Berrydale	Mar 20	Nov 10	8b
98045	North Bend	Apr 23	Nov 1	8a
98047	Pacific	Mar 8	Nov 14	8b
98050		Mar 30	Nov 7	8b
98051	Ravensdale	Apr 3	Nov 11	8b
98052	Redmond	Mar 8	Nov 23	8b
98053	Union Hill-Novelty Hill	Mar 8	Nov 23	8b
98055	Renton	Mar 20	Nov 10	9a
98056	Renton	Mar 13	Nov 16	9a
98057	Renton	Mar 13	Nov 16	9a
98058	Fairwood	Mar 13	Nov 16	8b
98059	East Renton Highlands	Mar 13	Nov 16	8b
98065	Snoqualmie	Mar 30	Nov 7	8b
98070	Vashon	Mar 2	Nov 23	9a
98072	Cottage Lake	Mar 8	Nov 23	8b
98074	Sammamish	Mar 8	Nov 23	8b
98075	Sammamish	Mar 30	Nov 7	8b
98077	Cottage Lake	Apr 17	Oct 23	8b
98092	Auburn	Apr 20	Oct 25	8b
98101	Seattle	Mar 13	Nov 17	9a
98102	Seattle	Mar 8	Nov 23	9a
98103	Seattle	Mar 8	Nov 23	9a
98104	Seattle	Mar 13	Nov 17	9a
98105	Seattle	Mar 8	Nov 23	9a
98106	Seattle	Mar 13	Nov 17	9a
98107	Seattle	Mar 8	Nov 23	9a
98108	Seattle	Mar 13	Nov 17	9a
98109	Seattle	Mar 8	Nov 23	9a
98112	Seattle	Mar 8	Nov 23	9a
98115	Seattle	Mar 8	Nov 23	9a
98116	Seattle	Mar 13	Nov 17	9a
98117	Seattle	Mar 8	Nov 23	9a
98118	Seattle	Mar 13	Nov 17	9a
98119	Seattle	Mar 8	Nov 23	9a
98121	Seattle	Mar 13	Nov 17	9a
98122	Seattle	Mar 13	Nov 17	9a
98125	Seattle	Mar 8	Nov 23	9a
98126	Seattle	Mar 13	Nov 17	9a
98133	Shoreline	Mar 8	Nov 23	9a
98134	Seattle	Mar 13	Nov 17	9a
98136	Seattle	Mar 13	Nov 17	9a
98144	Seattle	Mar 13	Nov 17	9a
98146	Burien	Mar 13	Nov 17	9a
98148	Burien	Mar 2	Nov 23	9a
98154	Seattle	Mar 13	Nov 17	9a
98155	Shoreline	Mar 8	Nov 23	9a
98158	SeaTac	Mar 2	Nov 23	9a
98164	Seattle	Mar 13	Nov 17	9a
98166	Burien	Mar 2	Nov 23	9a
98168	Tukwila	Mar 13	Nov 17	9a
98174	Seattle	Mar 13	Nov 17	9a
98177	Shoreline	Mar 8	Nov 23	9a
98178	Bryn Mawr-Skyway	Mar 13	Nov 16	9a
98188	Tukwila	Mar 2	Nov 23	9a
98195	Seattle	Mar 8	Nov 23	9a
98198	Des Moines	Mar 2	Nov 23	9a
98199	Seattle	Mar 8	Nov 23	9a
98224	Baring	Apr 14	Oct 29	8a
98288	Skykomish	Apr 14	Oct 29	8a

Nearby counties

Kitsap County Snohomish County Pierce County Mason County Jefferson County Island County

All Washington counties · Download Washington frost dates (CSV)

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