Average annual temperature is 11.9 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: -11.6 °C
Number of sunny days: 150 days
Number of rainy days: 200 days
Number of snow days: 15 days
Look at detailed online map of Swanson
* Weather data for Swanson 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) | 15.1 | 20.7 | 19.9 | 26.9 | 30.2 | 32.6 | 32.8 | 32.3 | 33.3 | 27.4 | 18.5 | 15.4 |
| Average daytime temperature (°C) | 6.9 | 10.6 | 9.9 | 17.7 | 21.8 | 25.6 | 29.0 | 27.2 | 24.5 | 17.9 | 10.8 | 8.3 |
| Average temperature (°C) | 2.8 | 3.7 | 4.1 | 11.1 | 15.1 | 19.4 | 22.9 | 21.2 | 18.7 | 13.0 | 5.6 | 4.3 |
| Average night temperature (°C) | -0.2 | -1.0 | -0.2 | 5.4 | 9.2 | 13.9 | 18.0 | 16.4 | 13.8 | 9.1 | 1.6 | 1.2 |
| Absolute minimum temperature (°C) | -6.9 | -11.6 | -8.0 | -2.7 | 1.6 | 8.5 | 13.7 | 11.5 | 8.0 | 0.4 | -7.6 | -5.2 |
| 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) | 3.2 | 6.8 | 6.5 | 8.8 | 10.2 | 10.7 | 11.4 | 10.8 | 9.2 | 6.9 | 6.6 | 4.4 |
| Precipitation (mm) | 134 | 59 | 122 | 68 | 75 | 127 | 118 | 74 | 46 | 96 | 44 | 65 |
| Sunny days | 6 | 15 | 9 | 15 | 20 | 13 | 3 | 9 | 11 | 16 | 19 | 14 |
| Rainy days | 18 | 12 | 17 | 15 | 11 | 17 | 28 | 22 | 19 | 15 | 10 | 16 |
| Snow days | 7 | 1 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Swanson during the most sunny months:
The largest precipitation sum in Swanson is at