Average annual temperature is 16.9 °C
Absolute maximum temperature: 43.1 °C
Absolute minimum temperature: 0.6 °C
Number of sunny days: 271 days
Number of rainy days: 94 days
Look at detailed online map of Grayson
* Weather data for Grayson 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) | 16.7 | 18.0 | 19.9 | 32.0 | 34.3 | 40.5 | 43.1 | 42.2 | 36.0 | 34.7 | 27.1 | 19.0 |
| Average daytime temperature (°C) | 13.4 | 13.8 | 15.1 | 22.2 | 26.5 | 30.9 | 38.0 | 37.5 | 30.7 | 27.0 | 20.3 | 16.4 |
| Average temperature (°C) | 9.1 | 8.2 | 9.9 | 14.9 | 18.0 | 21.4 | 27.5 | 27.2 | 22.2 | 19.2 | 13.5 | 11.1 |
| Average night temperature (°C) | 5.9 | 4.0 | 6.0 | 8.9 | 11.2 | 13.4 | 18.3 | 19.1 | 15.4 | 13.1 | 8.2 | 6.9 |
| Absolute minimum temperature (°C) | 1.1 | 0.6 | 0.8 | 2.6 | 7.6 | 10.8 | 11.7 | 13.3 | 12.6 | 5.5 | 2.7 | 2.2 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 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) | 5.9 | 7.6 | 7.7 | 11.6 | 11.6 | 13.1 | 13.4 | 12.2 | 11.3 | 10.1 | 8.4 | 6.8 |
| Precipitation (mm) | 199 | 75 | 178 | 1 | 29 | 0 | 0 | 1 | 6 | 13 | 21 | 99 |
| Sunny days | 12 | 16 | 10 | 29 | 23 | 29 | 31 | 28 | 26 | 28 | 21 | 18 |
| Rainy days | 19 | 12 | 21 | 1 | 8 | 1 | 0 | 3 | 4 | 3 | 9 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Grayson during the most sunny months:
The largest precipitation sum in Grayson is at