Portland, Oregon vs Mount Vernon, Washington Climate
93%matchPortland and Mount Vernon are a 93% climate match. Compared with Portland, Mount Vernon has the same winter lows, 5°F (3°C) cooler summer days and less sun.
Portland gets 42 in (1058 mm) of rain a year and Mount Vernon 36 in (921 mm). August is the warmest month in both, with highs of 81°F (27°C) in Portland and 76°F (25°C) in Mount Vernon.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
PortlandMount Vernonsolid = high, dashed = low
Rain (in per month)
PortlandMount Vernon
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Portland | Mount Vernon | Portland | Mount Vernon | Portland | Mount Vernon | |
| Jan | 47°F(8°C) | 47°F(8°C) | 36°F(2°C) | 36°F(2°C) | 5.9 in(150 mm) | 4.6 in(118 mm) |
| Feb | 51°F(11°C) | 50°F(10°C) | 36°F(2°C) | 36°F(2°C) | 4.3 in(109 mm) | 2.8 in(70 mm) |
| Mar | 56°F(13°C) | 53°F(12°C) | 39°F(4°C) | 38°F(4°C) | 4.6 in(116 mm) | 3.5 in(88 mm) |
| Apr | 61°F(16°C) | 59°F(15°C) | 42°F(6°C) | 42°F(6°C) | 3.3 in(84 mm) | 2.8 in(72 mm) |
| May | 68°F(20°C) | 65°F(19°C) | 47°F(8°C) | 47°F(9°C) | 2.4 in(62 mm) | 2.3 in(59 mm) |
| Jun | 73°F(23°C) | 70°F(21°C) | 52°F(11°C) | 51°F(11°C) | 1.7 in(42 mm) | 2.1 in(54 mm) |
| Jul | 81°F(27°C) | 75°F(24°C) | 56°F(13°C) | 54°F(12°C) | 0.5 in(13 mm) | 1.0 in(26 mm) |
| Aug | 81°F(27°C) | 76°F(25°C) | 55°F(13°C) | 54°F(12°C) | 0.7 in(19 mm) | 1.3 in(32 mm) |
| Sep | 76°F(24°C) | 71°F(21°C) | 51°F(10°C) | 50°F(10°C) | 1.5 in(37 mm) | 2.1 in(54 mm) |
| Oct | 64°F(18°C) | 60°F(16°C) | 44°F(7°C) | 43°F(6°C) | 3.8 in(97 mm) | 3.7 in(95 mm) |
| Nov | 53°F(11°C) | 52°F(11°C) | 39°F(4°C) | 39°F(4°C) | 6.2 in(157 mm) | 5.4 in(138 mm) |
| Dec | 46°F(8°C) | 46°F(8°C) | 35°F(2°C) | 35°F(2°C) | 6.8 in(172 mm) | 4.5 in(115 mm) |
1991–2020 averages, by calendar month.