Spokane County Climate
Spokane County, Washington
Avg Annual Temp
47.0°F
Annual Precip
18.4"
Annual Snowfall
46.8"
Extreme Heat Days
22.339999999999996
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.