Average Temperatures and Rainfall for Oregon

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).

What is the warmest or hottest month in Oregon?

August is the hottest or warmest month in Oregon, with an average maximum temperate of 29°C/84°F.

What is the coldest or coolest month in Oregon?

January is the coolest or coldest month in Oregon, with an average minimum temperate of 1°C/34°F.

What is the most rainy or wettest month in Oregon?

December is the wettest or most rainy month in Oregon, with an average rainfall of 140mm/6 inches.

What is the least rainy or driest month in Oregon?

August is the driest or least rainy month in Oregon, with an average rainfall of 7mm/0 inches.

What is the warmest or hottest place in Oregon?

Medford is the hottest or warmest place in Oregon, with an average maximum temperate of 13°C/55°F.

What is the coldest place in Oregon?

Bend is the coldest place in Oregon, with an average maximum temperate of 8°C/46°F.

What is the most rainy or wettest place in Oregon?

Portland is the most rainy or wettest place in Oregon, with an average annual rainfall of 1,188mm/47 inches.

What is the least rainy or driest place in Oregon?

Hillsboro is the least rainy or driest place in Oregon, with an average annual rainfall of 946mm/37 inches.

Average Monthly Temperatures
Average Maximum Temperature Average Minimum Temperature
Average Monthly Rainfall
PlaceMin TempMax TempAvg TempRainfall
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