Average annual temperature is 11.1 °C
Absolute maximum temperature: 30.4 °C
Absolute minimum temperature: -10.9 °C
Number of sunny days: 148 days
Number of rainy days: 204 days
Number of snow days: 13 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) | 16.1 | 20.3 | 22.1 | 23.3 | 23.2 | 27.3 | 30.4 | 29.3 | 28.8 | 23.9 | 20.9 | 14.8 |
| Average daytime temperature (°C) | 8.1 | 10.9 | 11.6 | 16.7 | 18.4 | 21.8 | 26.6 | 25.1 | 22.7 | 17.2 | 11.8 | 8.2 |
| Average temperature (°C) | 3.0 | 5.7 | 5.7 | 10.5 | 13.1 | 16.5 | 21.0 | 19.9 | 16.9 | 11.4 | 5.7 | 3.3 |
| Average night temperature (°C) | -0.6 | 1.6 | 1.1 | 5.3 | 8.9 | 12.2 | 16.6 | 15.9 | 12.4 | 7.0 | 1.3 | -0.4 |
| Absolute minimum temperature (°C) | -9.8 | -10.9 | -10.4 | -3.0 | 1.5 | 6.4 | 12.5 | 10.2 | 9.0 | 1.3 | -8.0 | -9.1 |
| 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) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| 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) | 4.9 | 6.0 | 8.2 | 9.5 | 10.3 | 11.0 | 11.8 | 10.3 | 10.7 | 8.7 | 7.9 | 5.9 |
| Precipitation (mm) | 101 | 130 | 86 | 97 | 78 | 67 | 83 | 104 | 42 | 25 | 36 | 92 |
| Sunny days | 13 | 11 | 13 | 14 | 8 | 10 | 7 | 9 | 11 | 18 | 19 | 15 |
| Rainy days | 15 | 14 | 16 | 16 | 23 | 20 | 24 | 22 | 19 | 13 | 9 | 13 |
| Snow days | 3 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 |
The best time to visit Grayson during the most sunny months:
The largest precipitation sum in Grayson is at