Spokane averages 31.7 days a year above 90°F, with December the wettest month at 2.18 in of normal rain. The hottest day on record was 113°F on Jun 29, 2021; the coldest, −10°F on Jan 5, 2004. The single biggest 24-hour rain event recorded was 1.67 in on May 21, 2004.
Climate and Average Weather Year Round in Spokane
Year-round temperature
In Spokane, the warmest months are June through September, with average daily highs between 76°F and 87°F. The coldest stretch runs December through February, with highs between 37°F and 43°F and overnight lows reaching 26°F.
Rainfall through the year
Rainfall in Spokane averages 1.4 in per month over the long run. December is the wettest at 2.2 in, while August is the driest at 0.5 in.
Days at 90 °F or hotter
Spokane averages 31.7 days per year at 90 °F or hotter. The hottest year on record saw 50 such days (2021); the coolest just 17 (2010).
Precipitation this year
As of May 28, Spokane has received 5.0 in of precipitation this year — 39% below the long-term normal for this point in the year (8.2 in).