Sunnyside, WA Weather & Climate Normals
Sunnyside's real weather, in one number
Sunnyside, WA scores 49/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Sunnyside's hottest and coldest months
Sunnyside's hottest month is Jul, averaging 71°F; its coldest is Dec, averaging 30°F, a 41.5°F swing across the year, a middling gap by national standards.
Rain and snow in Sunnyside
Over a typical year, Sunnyside sees about 7.65in of precipitation a year across roughly 66 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Sunnyside ranks
Sunnyside ranks 2140 of 4876 US cities in this dataset for comfort score, and 103 of 125 within WA. About 16,317 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from SUNNYSIDE, WA US, 0.6 miles from Sunnyside, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · How the comfort score is calculated