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South Cle Elum, WA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for South Cle Elum, a town in Kittitas County, Washington.

Today
80°F
Mostly Sunny
Mostly sunny, with a high near 80. East wind around 2 mph.

7-day forecast for South Cle Elum

WhenTempForecastWindPrecip
Today 80°F Mostly Sunny 2 mph E 0%
Tonight 50°F Mostly Clear 1 mph W 0%
Sunday 81°F Sunny 0 to 5 mph E 0%
Sunday Night 51°F Mostly Clear 1 mph NE 0%
Monday 81°F Mostly Sunny 0 to 5 mph NW 0%
Monday Night 47°F Partly Cloudy 5 mph W 0%
Tuesday 70°F Mostly Sunny 2 to 8 mph W 0%
Tuesday Night 43°F Partly Cloudy 2 to 8 mph W 0%
Wednesday 66°F Mostly Sunny 2 to 7 mph NW 0%
Wednesday Night 41°F Partly Cloudy 0 to 7 mph NW 3%
Thursday 65°F Partly Sunny 0 to 3 mph N 9%
Thursday Night 42°F Mostly Cloudy 0 to 3 mph NW 13%
Friday 62°F Partly Sunny 0 to 6 mph NW 10%
Friday Night 39°F Partly Cloudy 0 to 6 mph NW 10%

Forecast source: National Weather Service (api.weather.gov) for South Cle Elum (47.186, -120.953). Updated through the day.

Growing snapshot for South Cle Elum

Last spring frost
May 13
First fall frost
Sep 25
Growing season
132 days
Hardiness zone
7a

More local growing data for South Cle Elum: nearby ZIP 98943 weather · frost dates · planting calendar · Washington frost dates

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Climate data from the nearest NOAA station, Cle Elum, Wa (2.5 mi from South Cle Elum). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.