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Ellensburg, WA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Ellensburg, a city in Kittitas County, Washington.

This Afternoon
80°F
Mostly Sunny
Mostly sunny, with a high near 80. Southeast wind around 2 mph.

7-day forecast for Ellensburg

WhenTempForecastWindPrecip
This Afternoon 80°F Mostly Sunny 2 mph SE 0%
Tonight 51°F Mostly Clear 1 mph N 0%
Sunday 80°F Sunny 2 mph SE 0%
Sunday Night 52°F Mostly Clear 0 mph 0%
Monday 82°F Sunny 0 to 3 mph NW 0%
Monday Night 51°F Partly Cloudy 3 to 8 mph NW 0%
Tuesday 74°F Mostly Sunny 8 to 15 mph NW 0%
Tuesday Night 47°F Partly Cloudy 9 to 15 mph NW 0%
Wednesday 69°F Mostly Sunny 8 to 12 mph NW 0%
Wednesday Night 44°F Partly Cloudy 2 to 12 mph NW 1%
Thursday 66°F Partly Sunny 2 mph N 8%
Thursday Night 45°F Mostly Cloudy 2 mph N 10%
Friday 63°F Partly Sunny 1 to 6 mph NW 8%
Friday Night 41°F Partly Cloudy 1 to 7 mph NW 6%

Forecast source: National Weather Service (api.weather.gov) for Ellensburg (47.001, -120.550). Updated through the day.

Growing snapshot for Ellensburg

Last spring frost
May 8
First fall frost
Oct 2
Growing season
146 days
Hardiness zone
6b

More local growing data for Ellensburg: nearby ZIP 98934 weather · frost dates · planting calendar · Washington frost dates

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Climate data from the nearest NOAA station, Ellensburg, Wa (5.7 mi from Ellensburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.