Average annual temperature is 11.9 °C
Absolute maximum temperature: 32.6 °C
Absolute minimum temperature: -12.9 °C
Number of sunny days: 137 days
Number of rainy days: 213 days
Number of snow days: 15 days
Look at detailed online map of Denison
* Weather data for Denison 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) | 17.0 | 20.2 | 20.8 | 27.1 | 29.3 | 32.6 | 31.3 | 31.2 | 32.1 | 26.8 | 18.9 | 17.1 |
| Average daytime temperature (°C) | 7.3 | 10.6 | 10.1 | 18.5 | 21.3 | 25.2 | 27.8 | 26.6 | 23.7 | 17.8 | 11.1 | 8.5 |
| Average temperature (°C) | 3.4 | 4.1 | 4.4 | 11.5 | 14.8 | 19.0 | 22.4 | 21.1 | 18.1 | 12.9 | 5.7 | 4.6 |
| Average night temperature (°C) | 0.4 | -1.0 | -0.2 | 5.7 | 8.4 | 13.4 | 18.1 | 16.5 | 13.6 | 8.7 | 1.5 | 1.4 |
| Absolute minimum temperature (°C) | -6.8 | -12.9 | -7.9 | -2.9 | 1.8 | 7.2 | 14.0 | 11.0 | 7.3 | 1.0 | -7.1 | -5.3 |
| 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 | 9.4 |
| 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) | 2.7 | 6.3 | 6.0 | 8.6 | 10.3 | 10.7 | 10.9 | 10.7 | 8.6 | 6.4 | 6.7 | 4.0 |
| Precipitation (mm) | 118 | 83 | 115 | 59 | 78 | 152 | 139 | 94 | 52 | 122 | 48 | 78 |
| Sunny days | 5 | 11 | 9 | 13 | 21 | 11 | 3 | 7 | 13 | 15 | 18 | 11 |
| Rainy days | 19 | 16 | 18 | 17 | 10 | 19 | 28 | 24 | 17 | 16 | 10 | 19 |
| Snow days | 7 | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 |
The best time to visit Denison during the most sunny months:
The largest precipitation sum in Denison is at