Average annual temperature is 14.5 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -7.5 °C
Number of sunny days: 182 days
Number of rainy days: 180 days
Number of snow days: 3 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) | 18.9 | 25.0 | 24.5 | 29.6 | 29.3 | 33.3 | 36.7 | 35.8 | 35.2 | 30.6 | 26.6 | 19.8 |
| Average daytime temperature (°C) | 10.6 | 14.4 | 14.4 | 20.8 | 24.1 | 27.9 | 32.0 | 30.7 | 27.9 | 21.3 | 14.8 | 11.5 |
| Average temperature (°C) | 5.5 | 7.5 | 7.6 | 13.7 | 17.4 | 21.5 | 25.4 | 24.2 | 21.3 | 15.3 | 8.2 | 5.9 |
| Average night temperature (°C) | 1.9 | 2.5 | 2.4 | 7.6 | 11.6 | 15.8 | 20.0 | 18.8 | 15.5 | 10.5 | 3.6 | 2.2 |
| Absolute minimum temperature (°C) | -6.1 | -7.4 | -7.5 | 0.4 | 3.7 | 10.6 | 16.0 | 13.1 | 10.8 | 3.3 | -6.2 | -5.1 |
| 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 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 4.8 | 7.3 | 7.5 | 10.0 | 9.8 | 11.5 | 11.8 | 10.2 | 10.0 | 7.9 | 7.3 | 5.5 |
| Precipitation (mm) | 85 | 82 | 101 | 48 | 77 | 93 | 61 | 73 | 38 | 37 | 44 | 98 |
| Sunny days | 8 | 15 | 15 | 18 | 18 | 14 | 9 | 16 | 16 | 16 | 22 | 15 |
| Rainy days | 21 | 13 | 15 | 12 | 13 | 16 | 22 | 15 | 14 | 15 | 8 | 16 |
| Snow days | 2 | 0 | 1 | 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