Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Portland is from July, August, September. — consistent weather climate
🌦Humid
| Score | 12 | 13 | 14 | 25 | 75 | 79 | 80 | 81 | 84 | 54 | 21 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Polar | Polar | Cold | Cold | Mild | Humid | Humid | Humid | Humid | Cold | Cold | Polar |
| Temperature | -7–1°C | -8–2°C | -3–5°C | 3–11°C | 8–17°C | 14–22°C | 18–26°C | 17–25°C | 14–22°C | 8–15°C | 1–9°C | -4–3°C |
| Feels like | -12–-4°C | -13–-3°C | -8–1°C | -1–8°C | 6–16°C | 13–23°C | 18–28°C | 18–27°C | 13–22°C | 6–13°C | -3–5°C | -8–-1°C |
| Precipitation | 103mm 10 days | 82mm 10 days | 95mm 10 days | 115mm 12 days | 69mm 7 days | 96mm 9 days | 96mm 8 days | 91mm 9 days | 87mm 7 days | 115mm 10 days | 97mm 8 days | 128mm 11 days |
| Sunshine | 5.9h ☀︎ 64% | 6.9h ☀︎ 65% | 8.0h ☀︎ 67% | 7.8h ☀︎ 58% | 9.7h ☀︎ 66% | 11.0h ☀︎ 71% | 11.3h ☀︎ 75% | 10.8h ☀︎ 77% | 9.4h ☀︎ 75% | 7.1h ☀︎ 65% | 6.5h ☀︎ 67% | 5.6h ☀︎ 62% |
| Wind | NW · 20 km/h | W · 20 km/h | W · 20 km/h | W · 20 km/h | SW · 18 km/h | SW · 17 km/h | SW · 15 km/h | SW · 15 km/h | W · 16 km/h | W · 17 km/h | W · 19 km/h | W · 18 km/h |
| Humidity (%) | 68% | 69% | 67% | 70% | 72% | 76% | 77% | 78% | 78% | 77% | 71% | 72% |
| Day length | 9.4h | 10.5h | 12.0h | 13.5h | 14.7h | 15.4h | 15.1h | 13.9h | 12.5h | 11.0h | 9.7h | 9.0h |