Average annual temperature is 21.9 °C
Absolute maximum temperature: 42.3 °C
Absolute minimum temperature: 0.9 °C
Number of sunny days: 155 days
Number of rainy days: 210 days
Look at detailed online map of Waller County
* Weather data for Waller County 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) | 25.5 | 27.9 | 29.7 | 31.1 | 32.0 | 38.5 | 38.5 | 42.3 | 40.5 | 34.9 | 30.3 | 26.6 |
| Average daytime temperature (°C) | 18.8 | 20.0 | 23.9 | 24.6 | 28.4 | 34.8 | 36.4 | 39.3 | 34.9 | 27.8 | 21.2 | 19.5 |
| Average temperature (°C) | 13.8 | 14.2 | 18.5 | 19.2 | 23.6 | 28.6 | 30.6 | 32.7 | 29.0 | 22.2 | 16.0 | 13.5 |
| Average night temperature (°C) | 10.2 | 10.2 | 14.5 | 15.2 | 19.6 | 23.7 | 25.6 | 27.0 | 24.3 | 18.0 | 12.1 | 9.1 |
| Absolute minimum temperature (°C) | 1.1 | 0.9 | 4.4 | 9.9 | 12.6 | 19.6 | 23.3 | 24.1 | 21.1 | 7.2 | 3.9 | 1.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.1 | 12.0 | 12.9 | 13.7 | 14.0 | 13.9 | 13.2 | 12.3 | 11.4 | 10.7 | 10.2 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 6.3 | 6.7 | 7.4 | 7.7 | 8.8 | 11.9 | 12.2 | 12.0 | 10.5 | 8.1 | 6.5 | 7.8 |
| Precipitation (mm) | 129 | 46 | 79 | 179 | 146 | 81 | 44 | 14 | 47 | 97 | 81 | 66 |
| Sunny days | 12 | 13 | 9 | 5 | 4 | 12 | 17 | 20 | 13 | 16 | 14 | 20 |
| Rainy days | 19 | 15 | 22 | 25 | 27 | 18 | 14 | 11 | 17 | 15 | 16 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Waller County during the most sunny months:
The largest precipitation sum in Waller County is at