Average annual temperature is 20.0 °C
Absolute maximum temperature: 43.9 °C
Absolute minimum temperature: -8.8 °C
Number of sunny days: 238 days
Number of rainy days: 126 days
Number of snow days: 1 day
Look at detailed online map of Mattson
* Weather data for Mattson 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) | 28.1 | 31.0 | 30.5 | 34.9 | 35.4 | 41.7 | 41.3 | 43.9 | 42.9 | 34.6 | 31.3 | 24.3 |
| Average daytime temperature (°C) | 16.8 | 17.7 | 21.4 | 25.6 | 29.4 | 34.5 | 37.5 | 40.4 | 34.9 | 26.5 | 19.8 | 16.3 |
| Average temperature (°C) | 9.7 | 9.2 | 14.0 | 18.2 | 23.1 | 27.4 | 31.4 | 34.0 | 28.6 | 19.9 | 13.2 | 10.2 |
| Average night temperature (°C) | 4.4 | 3.6 | 8.7 | 12.2 | 17.9 | 21.8 | 25.7 | 27.6 | 23.2 | 14.5 | 8.3 | 5.4 |
| Absolute minimum temperature (°C) | -8.8 | -6.0 | -0.8 | 6.2 | 11.8 | 16.6 | 21.8 | 22.3 | 17.7 | -1.7 | -1.4 | -1.2 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.4 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.9 | 7.2 | 9.5 | 10.4 | 10.5 | 11.8 | 12.4 | 12.2 | 10.4 | 8.9 | 7.9 | 8.1 |
| Precipitation (mm) | 25 | 40 | 81 | 47 | 94 | 133 | 27 | 2 | 9 | 101 | 9 | 72 |
| Sunny days | 26 | 16 | 20 | 18 | 10 | 14 | 22 | 28 | 19 | 20 | 23 | 22 |
| Rainy days | 5 | 11 | 11 | 12 | 21 | 16 | 9 | 3 | 11 | 11 | 7 | 9 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Mattson during the most sunny months:
The largest precipitation sum in Mattson is at