Average annual temperature is 12.2 °C
Absolute maximum temperature: 33.8 °C
Absolute minimum temperature: -13.1 °C
Number of sunny days: 171 days
Number of rainy days: 182 days
Number of snow days: 12 days
Look at detailed online map of Portland
* Weather data for Portland United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 17.3 | 18.7 | 19.7 | 26.5 | 30.8 | 32.5 | 33.3 | 33.8 | 32.3 | 28.8 | 23.7 | 15.7 |
| Average daytime temperature (°C) | 5.1 | 9.9 | 9.9 | 17.5 | 22.3 | 26.8 | 28.8 | 27.0 | 25.2 | 18.2 | 11.6 | 8.3 |
| Average temperature (°C) | 1.8 | 3.3 | 4.2 | 11.0 | 16.1 | 20.6 | 23.6 | 21.9 | 19.7 | 13.4 | 6.0 | 4.5 |
| Average night temperature (°C) | -1.0 | -1.3 | 0.0 | 5.5 | 10.4 | 14.8 | 18.7 | 17.4 | 14.6 | 9.4 | 2.1 | 1.6 |
| Absolute minimum temperature (°C) | -10.6 | -13.1 | -8.2 | -1.6 | 1.4 | 9.9 | 14.4 | 11.1 | 9.1 | -3.6 | -9.3 | -6.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.1 | 7.4 | 6.8 | 8.8 | 10.2 | 10.6 | 12.1 | 10.5 | 9.6 | 7.0 | 7.7 | 4.0 |
| Precipitation (mm) | 118 | 91 | 145 | 77 | 52 | 77 | 130 | 115 | 28 | 71 | 22 | 44 |
| Sunny days | 8 | 17 | 12 | 14 | 22 | 12 | 7 | 14 | 17 | 13 | 22 | 13 |
| Rainy days | 16 | 11 | 15 | 16 | 9 | 18 | 24 | 17 | 13 | 17 | 8 | 18 |
| Snow days | 7 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
The best time to visit Portland during the most sunny months:
The largest precipitation sum in Portland is at