Climate of Oregon, USA
Area-weighted average across Oregon. For where people actually live and travel, see the cities below.
Oregon, a subdivision of United States of America, has a seasonal climate on average. Area-weighted monthly temperatures across the whole territory range from -0.2°C / 31.6°F in January to 17.8°C / 64°F in August, with rainfall from 15 mm / 0.6 in to 124 mm / 4.9 in depending on the season (796 mm / 31.3 in total across the year). See the 2 cities listed below for point-value climate at specific locations — these often differ from the area-weighted average, especially in geographically diverse subdivisions.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | -0.2°C31.6°F | 114 mm4.5″ | Snowy |
| February | 1.6°C34.9°F | 88 mm3.5″ | Snowy |
| March | 3.8°C38.8°F | 85 mm3.3″ | — |
| April | 6.4°C43.5°F | 59 mm2.3″ | — |
| May | 10.1°C50.2°F | 48 mm1.9″ | — |
| June | 13.9°C57°F | 36 mm1.4″ | — |
| July | 17.6°C63.7°F | 15 mm0.6″ | Sunny & Mild |
| August | 17.8°C64°F | 22 mm0.9″ | Sunny & Mild |
| September | 14.1°C57.4°F | 32 mm1.3″ | Sunny & Mild |
| October | 9.2°C48.6°F | 57 mm2.2″ | — |
| November | 3.5°C38.3°F | 116 mm4.6″ | — |
| December | -0.1°C31.8°F | 124 mm4.9″ | Snowy |
Frequently asked questions
What is the best time to visit Oregon?
The best months to visit Oregon, United States of America for sunny, dry weather are July, August, September. The warmest month is August at an area-wide average of 17.8°C / 64°F, and the driest is July with about 15 mm / 0.6 in of rainfall.
What is the climate of Oregon?
Oregon, United States of America has area-weighted monthly average temperatures ranging from -0.2°C / 31.6°F in January to 17.8°C / 64°F in August. Annual rainfall averages about 796 mm / 31.3 in, with the wettest month being December (124 mm / 4.9 in) and the driest July (15 mm / 0.6 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Oregon?
The hottest month in Oregon is August, with an area-wide average temperature of 17.8°C / 64°F.
What is the coldest month in Oregon?
The coldest month in Oregon is January, with an area-wide average temperature of -0.2°C / 31.6°F.
When does it rain most in Oregon?
The wettest month in Oregon is December, averaging about 124 mm / 4.9 in of rainfall. The driest is July with about 15 mm / 0.6 in.