Average annual temperature is 13.3 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -12.6 °C
Number of sunny days: 205 days
Number of rainy days: 154 days
Number of snow days: 6 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) | 12.2 | 17.2 | 20.6 | 28.0 | 31.4 | 36.6 | 36.2 | 36.5 | 34.2 | 31.7 | 22.3 | 15.4 |
| Average daytime temperature (°C) | 5.1 | 8.9 | 10.5 | 19.3 | 25.9 | 29.9 | 30.4 | 29.8 | 27.7 | 19.9 | 12.3 | 8.3 |
| Average temperature (°C) | 0.4 | 2.0 | 4.9 | 12.3 | 19.2 | 23.8 | 24.8 | 24.6 | 21.7 | 14.5 | 6.8 | 4.0 |
| Average night temperature (°C) | -3.1 | -3.0 | 0.8 | 6.8 | 13.2 | 18.1 | 20.1 | 20.4 | 16.5 | 10.2 | 2.5 | 0.7 |
| Absolute minimum temperature (°C) | -12.2 | -12.6 | -9.7 | -2.3 | 4.0 | 11.8 | 15.5 | 14.9 | 11.6 | -3.4 | -6.6 | -4.5 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 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) | 5.7 | 7.8 | 7.2 | 10.0 | 10.8 | 12.3 | 10.9 | 11.0 | 10.6 | 7.8 | 6.6 | 5.0 |
| Precipitation (mm) | 51 | 75 | 72 | 73 | 53 | 119 | 102 | 122 | 72 | 112 | 27 | 106 |
| Sunny days | 18 | 18 | 14 | 21 | 18 | 16 | 12 | 14 | 22 | 15 | 22 | 15 |
| Rainy days | 10 | 10 | 16 | 9 | 13 | 14 | 19 | 17 | 8 | 16 | 6 | 16 |
| Snow days | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 |
The best time to visit Grayson during the most sunny months:
The largest precipitation sum in Grayson is at