Spokane County Climate
Spokane County, Washington
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
47.0°F
Annual Precip
18.4"
Annual Snowfall
46.8"
Extreme Heat Days
22
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
1,933
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Spokane County
Climate Verdict
Spokane County has a cool, averaging 47.0°F annually, semi-arid conditions with only 18.4 inches of annual precipitation, occasional hot days — 22.339999999999996 per year above 90°F, moderate snowfall of 46.8 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 29.2°F. summers are pleasantly cool with July averaging 68.2°F. The 39°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Spokane County closely matches the Washington statewide average temperature of 49.9°F, it is also noticeably drier, receiving 20.1 inches less precipitation than the state average.
Climate Profile
About Spokane County Weather
The Inland Empire's Sharp Seasons
Spokane County averages 47.0°F annually, which is significantly colder than the national median. Its 18.4 inches of annual precipitation is much lower than the national average, marking it as a semi-arid climate.
Colder and Drier than Western Washington
The county's 47.0°F annual temperature is nearly three degrees colder than the state average of 49.9°F. Its 18.4 inches of rain is less than half the state average, reflecting its position east of the Cascades.
Warmer and Drier than Pend Oreille
Spokane County is roughly one degree warmer than its northern neighbor, Pend Oreille. It receives nearly 10 inches less annual precipitation, but shares a similar pattern of hot summers and snowy winters.
Hot Summers Meet Snowy Winters
Spokane faces 22 days of extreme heat over 90°F and a January average of just 29.2°F. The winter season is defined by 46.8 inches of annual snowfall, requiring significant winter preparation.
Equip Your Home for All Extremes
Both high-efficiency heating and air conditioning are essential here due to the 22 heat days and sub-freezing winters. Residents also need dedicated snow removal equipment to manage nearly 4 feet 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.