Washington averages 40.7 days a year above 90°F, with July the wettest month at 4.62 in of normal rain. The hottest day on record was 106°F on Jul 30, 2011; the coldest, −10°F on Jan 17, 1982. The single biggest 24-hour rain event recorded was 7.37 in on Jun 26, 2006.
Climate and Average Weather Year Round in Washington
Year-round temperature
In Washington, the warmest months are June through September, with average daily highs between 82°F and 90°F. The coldest stretch runs December through February, with highs between 45°F and 49°F and overnight lows reaching 28°F.
Rainfall through the year
Rainfall in Washington averages 3.8 in per month over the long run. July is the wettest at 4.6 in, while February is the driest at 2.8 in.
Days at 90 °F or hotter
Washington averages 40.7 days per year at 90 °F or hotter. The hottest year on record saw 73 such days (2019); the coolest just 21 (1996).
Precipitation this year
As of May 29, Washington has received 7.0 in of precipitation this year — 59% below the long-term normal for this point in the year (17.2 in).