Average annual temperature is 9.9 °C
Absolute maximum temperature: 31.8 °C
Absolute minimum temperature: -26.0 °C
Number of sunny days: 125 days
Number of rainy days: 218 days
Number of snow days: 22 days
Look at detailed online map of Glen Castle
* Weather data for Glen Castle 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) | 14.8 | 16.4 | 15.4 | 28.1 | 30.3 | 31.3 | 31.8 | 27.8 | 31.0 | 28.1 | 15.7 | 11.7 |
| Average daytime temperature (°C) | 4.3 | 6.2 | 6.6 | 16.9 | 20.1 | 23.7 | 27.4 | 24.4 | 22.4 | 16.8 | 8.1 | 6.4 |
| Average temperature (°C) | 0.9 | -0.2 | 1.3 | 9.8 | 13.0 | 17.9 | 21.7 | 19.3 | 16.9 | 12.0 | 3.3 | 2.7 |
| Average night temperature (°C) | -2.2 | -5.0 | -2.8 | 4.3 | 6.3 | 12.8 | 17.0 | 15.2 | 12.6 | 8.2 | -0.2 | 0.1 |
| Absolute minimum temperature (°C) | -8.6 | -26.0 | -9.1 | -4.3 | -1.0 | 6.7 | 12.6 | 9.8 | 5.9 | 0.4 | -6.6 | -6.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 2.7 | 5.3 | 5.8 | 8.6 | 12.1 | 11.0 | 11.0 | 10.1 | 8.7 | 6.5 | 6.3 | 3.2 |
| Precipitation (mm) | 98 | 63 | 113 | 90 | 51 | 124 | 177 | 214 | 71 | 78 | 50 | 137 |
| Sunny days | 7 | 9 | 7 | 12 | 20 | 9 | 3 | 6 | 17 | 13 | 11 | 11 |
| Rainy days | 18 | 14 | 19 | 18 | 11 | 21 | 28 | 25 | 13 | 18 | 16 | 17 |
| Snow days | 6 | 5 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 |
The best time to visit Glen Castle during the most sunny months:
The largest precipitation sum in Glen Castle is at