Average annual temperature is 16.7 °C
Absolute maximum temperature: 41.9 °C
Absolute minimum temperature: -12.0 °C
Number of sunny days: 266 days
Number of rainy days: 91 days
Number of snow days: 8 days
Look at detailed online map of Allen (historical)
* Weather data for Allen (historical) 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) | 21.0 | 23.4 | 27.3 | 30.8 | 33.6 | 40.2 | 41.9 | 39.6 | 38.9 | 30.9 | 28.2 | 21.5 |
| Average daytime temperature (°C) | 12.6 | 15.6 | 19.3 | 24.6 | 28.3 | 32.1 | 36.8 | 35.9 | 31.5 | 24.1 | 17.5 | 13.2 |
| Average temperature (°C) | 5.8 | 6.8 | 10.9 | 15.7 | 20.6 | 24.1 | 29.4 | 29.2 | 24.4 | 16.7 | 10.1 | 6.1 |
| Average night temperature (°C) | 0.5 | 0.9 | 4.2 | 8.4 | 13.9 | 17.1 | 22.5 | 22.5 | 18.3 | 10.7 | 4.3 | 0.7 |
| Absolute minimum temperature (°C) | -12.0 | -8.7 | -3.5 | 0.0 | 7.2 | 12.1 | 17.0 | 16.7 | 12.8 | -4.2 | -4.6 | -5.8 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 8.1 | 8.8 | 9.9 | 11.5 | 11.2 | 12.2 | 12.8 | 12.1 | 10.7 | 9.7 | 8.3 | 7.9 |
| Precipitation (mm) | 10 | 3 | 10 | 13 | 65 | 79 | 11 | 11 | 40 | 22 | 5 | 40 |
| Sunny days | 25 | 22 | 26 | 25 | 12 | 16 | 22 | 24 | 23 | 21 | 25 | 25 |
| Rainy days | 4 | 2 | 5 | 5 | 19 | 14 | 9 | 7 | 7 | 9 | 5 | 5 |
| Snow days | 2 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
The largest precipitation sum in Allen (historical) is at