Douglas County Climate
Douglas County, Washington
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
49.1°F
Annual Precip
10.0"
Annual Snowfall
27.9"
Extreme Heat Days
34
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
2,618
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Douglas County
Climate Verdict
Douglas County has a cool, averaging 49.1°F annually, arid conditions receiving just 10.0 inches of precipitation annually, occasional hot days — 34.266666666666666 per year above 90°F, moderate snowfall of 27.9 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 27.1°F. summers are warm — July averages 72.5°F. The 45°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 Douglas County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Douglas County closely matches the Washington statewide average temperature of 49.9°F, it is also noticeably drier, receiving 28.6 inches less precipitation than the state average, the county experiences 16.273899613899616 more extreme heat days than the state average.
Climate Profile
About Douglas County Weather
A Cool Continental Climate in Douglas
Douglas County’s average temperature of 49.1°F sits below the national median, characterizing its semi-arid continental climate. This cooler baseline reflects its position in the high desert of Central Washington.
Drier and Steadier Than the State
At 49.1°F, Douglas ranks slightly below the Washington state average of 49.9°F. It experiences much drier conditions than the state norm, receiving only 10.0 inches of annual precipitation compared to the 38.5-inch average.
High Desert Neighbors and Cold Winters
Its 10-inch annual rainfall is similar to neighboring Grant County, though its winters are notably colder with a January average of 27.1°F. It lacks the maritime influence that keeps coastal counties much wetter and milder.
Scorching Summers and Snowy Winters
Residents face 34 extreme heat days above 90°F during summers that average 69.5°F. Winter brings a sharp contrast, delivering 27.9 inches of snowfall and an average low of 28.7°F.
Preparing for Thermal Extremes
High-efficiency HVAC systems are essential to handle the 34 days of extreme summer heat. Winter preparations should include heavy-duty snow removal equipment to manage nearly 28 inches of annual snow.
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.