Climate of Portland, Oregon, USA
Point-value climate at Portland (Oregon, United States of America). Population approximately 1,875,000.
Located in Oregon, United States of America, Portland has a seasonal climate. Population approximately 1,875,000. Monthly average temperatures range from 4.3°C / 39.7°F in January to 19.3°C / 66.7°F in July, with rainfall varying from 19 mm / 0.7 in (July) to 172 mm / 6.8 in (December) — about 1077 mm / 42.4 in across the year. These are point-value climate normals sampled at Portland's coordinates — often quite different from the surrounding region's area-weighted average.
Best sunny months: June, July, August, September.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 4.3°C39.7°F | 158 mm6.2″ | — |
| February | 6.1°C43°F | 123 mm4.8″ | — |
| March | 8.3°C46.9°F | 109 mm4.3″ | — |
| April | 10.4°C50.7°F | 77 mm3″ | — |
| May | 13.7°C56.7°F | 62 mm2.4″ | — |
| June | 16.6°C61.9°F | 43 mm1.7″ | Sunny & Mild |
| July | 19.3°C66.7°F | 19 mm0.7″ | Sunny & Mild |
| August | 19.3°C66.7°F | 25 mm1″ | Sunny & Mild |
| September | 16.7°C62.1°F | 46 mm1.8″ | Sunny & Mild |
| October | 11.9°C53.4°F | 83 mm3.3″ | — |
| November | 7.3°C45.1°F | 160 mm6.3″ | — |
| December | 4.3°C39.7°F | 172 mm6.8″ | — |
Frequently asked questions
What is the best time to visit Portland?
The months with the sunniest, driest weather are June, July, August, September. Portland's warmest month is July at an average of 19.3°C / 66.7°F, and its driest month is July with about 19 mm / 0.7 in of rain.
What is the climate of Portland?
Portland, in Oregon, United States of America, has monthly average temperatures ranging from 4.3°C / 39.7°F in January to 19.3°C / 66.7°F in July. Annual rainfall is approximately 1077 mm / 42.4 in, with the wettest month being December (172 mm / 6.8 in) and the driest July (19 mm / 0.7 in).
What is the average temperature in Portland in July?
The average temperature in Portland in July is 19.3°C / 66.7°F, with rainfall of about 19 mm / 0.7 in — the warmest month of the year.
When is the driest month in Portland?
The driest month in Portland is July, with about 19 mm / 0.7 in of average monthly rainfall. Average temperature that month is 19.3°C / 66.7°F.
When is the wettest month in Portland?
The wettest month in Portland is December, with approximately 172 mm / 6.8 in of average monthly rainfall.