Seattle vs Portland, Oregon Climate
95%matchSeattle vs Portland: a 95% climate match. Compared with Seattle, Portland has the same winter lows and 5°F (3°C) hotter summer days.
Seattle gets 38 in (974 mm) of rain a year and Portland 42 in (1058 mm). August is the warmest month in both, with highs of 76°F (24°C) in Seattle and 81°F (27°C) in Portland.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
SeattlePortlandsolid = high, dashed = low
Rain (in per month)
SeattlePortland
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Seattle | Portland | Seattle | Portland | Seattle | Portland | |
| Jan | 47°F(8°C) | 47°F(8°C) | 37°F(3°C) | 36°F(2°C) | 5.4 in(136 mm) | 5.9 in(150 mm) |
| Feb | 49°F(10°C) | 51°F(11°C) | 37°F(3°C) | 36°F(2°C) | 3.5 in(90 mm) | 4.3 in(109 mm) |
| Mar | 53°F(12°C) | 56°F(13°C) | 39°F(4°C) | 39°F(4°C) | 4.4 in(111 mm) | 4.6 in(116 mm) |
| Apr | 58°F(14°C) | 61°F(16°C) | 42°F(6°C) | 42°F(6°C) | 3.0 in(75 mm) | 3.3 in(84 mm) |
| May | 65°F(18°C) | 68°F(20°C) | 48°F(9°C) | 47°F(8°C) | 1.8 in(45 mm) | 2.4 in(62 mm) |
| Jun | 70°F(21°C) | 73°F(23°C) | 52°F(11°C) | 52°F(11°C) | 1.6 in(40 mm) | 1.7 in(42 mm) |
| Jul | 75°F(24°C) | 81°F(27°C) | 56°F(13°C) | 56°F(13°C) | 0.7 in(19 mm) | 0.5 in(13 mm) |
| Aug | 76°F(24°C) | 81°F(27°C) | 56°F(13°C) | 55°F(13°C) | 1.1 in(28 mm) | 0.7 in(19 mm) |
| Sep | 70°F(21°C) | 76°F(24°C) | 52°F(11°C) | 51°F(10°C) | 1.6 in(40 mm) | 1.5 in(37 mm) |
| Oct | 60°F(15°C) | 64°F(18°C) | 45°F(7°C) | 44°F(7°C) | 3.7 in(95 mm) | 3.8 in(97 mm) |
| Nov | 51°F(11°C) | 53°F(11°C) | 40°F(5°C) | 39°F(4°C) | 5.7 in(146 mm) | 6.2 in(157 mm) |
| Dec | 46°F(8°C) | 46°F(8°C) | 36°F(2°C) | 35°F(2°C) | 5.9 in(149 mm) | 6.8 in(172 mm) |
1991–2020 averages, by calendar month.