Kittitas County Climate
Kittitas County, Washington
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
46.4°F
Annual Precip
31.4"
Annual Snowfall
—
Extreme Heat Days
16
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
1,748
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Kittitas County
Climate Verdict
Kittitas County has a cool, averaging 46.4°F annually, moderate rainfall of 31.4 inches per year, rare extreme heat with only 16.04 days above 90°F annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 29.0°F. summers are pleasantly cool with July averaging 65.9°F. The 37°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Kittitas County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Kittitas County is 3.6°F cooler than the Washington statewide average of 49.9°F, it is also noticeably drier, receiving 7.1 inches less precipitation than the state average.
Climate Profile
About Kittitas County Weather
A Cooler Continental Influence
With an average annual temperature of 46.4°F, Kittitas County is significantly cooler than the national median. The area experiences more distinct temperature shifts than coastal regions.
Cooler and Drier Than Average
The county's 46.4°F average temperature sits below the Washington state average of 49.9°F. Its 31.4 inches of precipitation also falls short of the 38.5-inch statewide mark.
Contrasting With the Coast
Kittitas sees 16 extreme heat days, far more than the 3 days recorded in neighboring King County. It also receives less than half the rainfall found in the Puget Sound region.
Hot Summers and Cold Winters
January temperatures drop to an average of 29.0°F, while July reaches a warm 65.9°F average. Although annual snowfall data is currently unavailable, the county faces 16 days of extreme heat every year.
Equip for Seasonal Extremes
Residents need reliable heating systems to handle winter averages of 30.2°F. Cooling solutions are also important for the 16 days of extreme heat that occur during the summer months.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.