Average annual temperature is 9.1 °C
Absolute maximum temperature: 36.0 °C
Absolute minimum temperature: -26.2 °C
Number of sunny days: 191 days
Number of rainy days: 134 days
Number of snow days: 40 days
Look at detailed online map of Town of Portland
* Weather data for Town of 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) | 5.0 | 7.5 | 11.9 | 25.4 | 30.1 | 31.6 | 31.6 | 36.0 | 33.5 | 29.1 | 15.9 | 11.6 |
| Average daytime temperature (°C) | -1.3 | 1.5 | 5.2 | 13.5 | 22.0 | 27.0 | 26.7 | 26.8 | 23.7 | 14.5 | 7.0 | 4.2 |
| Average temperature (°C) | -5.2 | -4.0 | -0.4 | 7.3 | 15.2 | 20.8 | 21.3 | 21.4 | 18.3 | 10.3 | 2.6 | 0.4 |
| Average night temperature (°C) | -8.2 | -8.2 | -4.5 | 2.7 | 9.4 | 15.3 | 16.4 | 16.8 | 14.3 | 6.9 | -0.7 | -2.2 |
| Absolute minimum temperature (°C) | -26.0 | -26.2 | -16.0 | -5.2 | -0.3 | 6.4 | 11.9 | 10.7 | 8.1 | -6.0 | -13.8 | -9.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.3 | 10.5 | 11.9 | 13.4 | 14.7 | 15.4 | 15.1 | 14.0 | 12.5 | 11.0 | 9.7 | 9.0 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 4.0 | 6.2 | 7.0 | 7.9 | 11.2 | 12.8 | 12.4 | 11.0 | 9.1 | 6.4 | 6.6 | 4.2 |
| Precipitation (mm) | 44 | 57 | 72 | 115 | 44 | 28 | 84 | 110 | 132 | 76 | 9 | 37 |
| Sunny days | 14 | 12 | 15 | 17 | 19 | 19 | 14 | 16 | 11 | 12 | 23 | 19 |
| Rainy days | 5 | 6 | 8 | 12 | 12 | 11 | 17 | 15 | 19 | 16 | 6 | 7 |
| Snow days | 12 | 10 | 8 | 1 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 5 |
The best time to visit Town of Portland during the most sunny months:
Months with the longest average daylight duration in Town of Portland:
The largest precipitation sum in Town of Portland is at