Average annual temperature is 16.7 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: -4.6 °C
Number of sunny days: 174 days
Number of rainy days: 191 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) | 19.6 | 24.1 | 24.8 | 26.8 | 30.3 | 32.1 | 35.7 | 36.3 | 32.5 | 27.7 | 25.4 | 18.6 |
| Average daytime temperature (°C) | 13.7 | 16.8 | 18.0 | 21.0 | 24.4 | 28.4 | 32.6 | 31.5 | 27.7 | 22.6 | 17.2 | 13.0 |
| Average temperature (°C) | 8.7 | 11.7 | 12.2 | 15.5 | 18.9 | 22.7 | 26.5 | 25.8 | 21.9 | 17.0 | 11.5 | 8.0 |
| Average night temperature (°C) | 4.9 | 7.7 | 7.2 | 10.6 | 14.6 | 17.8 | 21.3 | 21.2 | 17.0 | 12.2 | 7.1 | 3.8 |
| Absolute minimum temperature (°C) | -4.6 | -3.1 | -4.4 | 4.1 | 6.2 | 14.5 | 19.0 | 16.8 | 12.2 | 6.0 | -3.4 | -3.5 |
| 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 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 5.7 | 6.2 | 8.3 | 9.1 | 9.8 | 10.8 | 11.6 | 10.5 | 10.1 | 8.7 | 6.9 | 6.4 |
| Precipitation (mm) | 123 | 123 | 152 | 138 | 112 | 114 | 73 | 157 | 54 | 38 | 60 | 126 |
| Sunny days | 12 | 10 | 17 | 13 | 10 | 12 | 9 | 9 | 18 | 23 | 21 | 20 |
| Rainy days | 19 | 18 | 14 | 17 | 21 | 18 | 22 | 22 | 12 | 8 | 9 | 11 |
| 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