Average annual temperature is 12.5 °C
Absolute maximum temperature: 32.8 °C
Absolute minimum temperature: -9.7 °C
Number of sunny days: 168 days
Number of rainy days: 187 days
Number of snow days: 10 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) | 17.3 | 20.1 | 21.7 | 26.4 | 29.7 | 32.1 | 32.5 | 32.2 | 32.8 | 28.9 | 23.2 | 16.5 |
| Average daytime temperature (°C) | 6.3 | 11.0 | 11.2 | 17.6 | 22.2 | 26.0 | 28.5 | 27.5 | 25.5 | 18.6 | 11.9 | 8.9 |
| Average temperature (°C) | 2.5 | 4.2 | 4.9 | 11.2 | 16.2 | 20.4 | 23.4 | 22.2 | 19.8 | 13.7 | 6.2 | 4.5 |
| Average night temperature (°C) | -0.7 | -0.4 | 0.4 | 5.8 | 10.5 | 15.0 | 18.8 | 17.3 | 14.8 | 9.7 | 2.2 | 1.4 |
| Absolute minimum temperature (°C) | -9.7 | -9.5 | -7.8 | -0.9 | 1.8 | 10.2 | 14.8 | 11.5 | 9.9 | -2.9 | -7.8 | -4.2 |
| 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 | 15.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.4 |
| 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) | 3.8 | 7.3 | 7.3 | 8.7 | 10.1 | 10.3 | 12.0 | 11.0 | 9.7 | 7.1 | 7.6 | 4.6 |
| Precipitation (mm) | 124 | 55 | 147 | 81 | 73 | 95 | 101 | 114 | 35 | 51 | 35 | 43 |
| Sunny days | 7 | 15 | 13 | 16 | 18 | 14 | 5 | 14 | 18 | 13 | 22 | 13 |
| Rainy days | 21 | 11 | 14 | 14 | 13 | 16 | 26 | 17 | 12 | 17 | 8 | 18 |
| Snow days | 3 | 2 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
The best time to visit Grayson during the most sunny months:
The largest precipitation sum in Grayson is at