Prosser, WA Weather & Climate Normals
Prosser's real weather, in one number
Prosser, 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.
Prosser's hottest and coldest months
Prosser's hottest month is Jul, averaging 75°F; its coldest is Dec, averaging 33°F, a 42.1°F swing across the year, a middling gap by national standards.
Prosser's weather across the year
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 40°F | 27°F | 1.24in |
| Feb | 47°F | 29°F | 0.9in |
| Mar | 56°F | 35°F | 0.69in |
| Apr | 65°F | 40°F | 0.74in |
| May | 74°F | 48°F | 0.88in |
| Jun | 81°F | 54°F | 0.68in |
| Jul | 90°F | 60°F | 0.21in |
| Aug | 89°F | 58°F | 0.16in |
| Sep | 80°F | 50°F | 0.27in |
| Oct | 65°F | 41°F | 0.77in |
| Nov | 49°F | 32°F | 0.86in |
| Dec | 40°F | 26°F | 1.33in |
May, Jun, Jul, Aug, and Sep are the best time to see Prosser at its mildest; the rest of the year, plan around Dec's cold.
Rain and snow in Prosser
Over a typical year, Prosser sees about 8.73in of precipitation a year across roughly 62 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Prosser ranks
Prosser ranks 2247 of 4876 US cities in this dataset for comfort score, and 107 of 125 within WA. About 6,540 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Prosser, WA US, 0.7 miles from Prosser, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is