Average annual temperatures for Oregon (12°C/54°F) are slightly below the average for United States (13°C/55°F).
Average annual rainfall for Oregon (934mm/37 inches) is significantly below the average for United States (1,039mm/41 inches).
August is the hottest or warmest month in Oregon, with an average maximum temperate of 29°C/84°F.
January is the coolest or coldest month in Oregon, with an average minimum temperate of 1°C/34°F.
December is the wettest or most rainy month in Oregon, with an average rainfall of 140mm/6 inches.
August is the driest or least rainy month in Oregon, with an average rainfall of 7mm/0 inches.
Medford is the hottest or warmest place in Oregon, with an average maximum temperate of 13°C/55°F.
Bend is the coldest place in Oregon, with an average maximum temperate of 8°C/46°F.
Portland is the most rainy or wettest place in Oregon, with an average annual rainfall of 1,188mm/47 inches.
Hillsboro is the least rainy or driest place in Oregon, with an average annual rainfall of 946mm/37 inches.
| Place | Min Temp | Max Temp | Avg Temp | Rainfall |
|---|---|---|---|---|
| Albany | 6 | 18 | 12 | 1,153 |
| Beaverton | 6 | 18 | 12 | 946 |
| Bend | -1 | 17 | 8 | - |
| Corvallis | 6 | 18 | 12 | 1,153 |
| Eugene | 6 | 18 | 12 | 979 |
| Gresham | 8 | 18 | 13 | 1,033 |
| Hillsboro | 6 | 18 | 12 | 946 |
| Medford | 7 | 20 | 13 | - |
| Portland | 8 | 17 | 12 | 1,188 |
| Salem | 6 | 18 | 12 | 948 |
| Tigard | 8 | 17 | 13 | 1,180 |