Hermiston, OR Weather & Climate Normals
Hermiston's real weather, in one number
Hermiston, OR scores 44/100 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. 4 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Hermiston's hottest and coldest months
Hermiston's hottest month is Jul, averaging 76°F; its coldest is Dec, averaging 35°F, a 40.5°F swing across the year, a middling gap by national standards.
Hermiston's weather across the year
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 43°F | 29°F | 1.14in |
| Feb | 49°F | 29°F | 0.86in |
| Mar | 59°F | 34°F | 0.77in |
| Apr | 67°F | 39°F | 0.78in |
| May | 76°F | 46°F | 0.83in |
| Jun | 82°F | 53°F | 0.64in |
| Jul | 93°F | 59°F | 0.12in |
| Aug | 91°F | 57°F | 0.17in |
| Sep | 81°F | 48°F | 0.33in |
| Oct | 67°F | 39°F | 0.8in |
| Nov | 51°F | 32°F | 1.05in |
| Dec | 42°F | 28°F | 1.12in |
May, Jun, Aug, and Sep are the best time to see Hermiston at its mildest; the rest of the year, plan around Jul's heat and Dec's cold.
Rain and snow in Hermiston
Over a typical year, Hermiston sees about 8.61in of precipitation a year across roughly 80 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Hermiston ranks
Hermiston ranks 3765 of 4876 US cities in this dataset for comfort score, and 76 of 80 within OR. About 19,746 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Hermiston Muni Ap, OR US, 1.2 miles from Hermiston, 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