Average annual temperature is 13.3 °C
Absolute maximum temperature: 39.5 °C
Absolute minimum temperature: -17.8 °C
Number of sunny days: 244 days
Number of rainy days: 103 days
Number of snow days: 18 days
Look at detailed online map of Keller
* Weather data for Keller 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) | 18.3 | 21.4 | 25.2 | 32.1 | 31.5 | 37.7 | 39.5 | 38.8 | 38.6 | 29.6 | 28.6 | 20.2 |
| Average daytime temperature (°C) | 6.5 | 10.7 | 14.6 | 21.5 | 25.6 | 28.9 | 33.9 | 33.5 | 30.5 | 22.1 | 16.1 | 10.3 |
| Average temperature (°C) | -0.2 | 1.0 | 6.1 | 12.6 | 18.4 | 21.6 | 25.8 | 26.2 | 22.6 | 14.1 | 7.5 | 2.8 |
| Average night temperature (°C) | -4.7 | -5.7 | -0.3 | 5.2 | 11.8 | 15.3 | 18.6 | 19.4 | 15.3 | 7.3 | 1.1 | -2.0 |
| Absolute minimum temperature (°C) | -17.8 | -16.5 | -7.0 | -3.3 | 6.9 | 10.6 | 14.9 | 14.2 | 9.1 | -6.6 | -7.7 | -5.6 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| 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) | 7.5 | 8.7 | 9.5 | 10.8 | 11.5 | 11.7 | 12.7 | 11.7 | 10.9 | 10.0 | 8.3 | 6.8 |
| Precipitation (mm) | 29 | 9 | 13 | 38 | 50 | 127 | 69 | 17 | 36 | 3 | 2 | 13 |
| Sunny days | 21 | 22 | 20 | 22 | 11 | 13 | 14 | 21 | 25 | 27 | 25 | 23 |
| Rainy days | 7 | 1 | 9 | 7 | 20 | 17 | 17 | 10 | 5 | 4 | 2 | 4 |
| Snow days | 3 | 5 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 4 |
The best time to visit Keller during the most sunny months:
The largest precipitation sum in Keller is at