Average annual temperature is 10.7 °C
Absolute maximum temperature: 31.9 °C
Absolute minimum temperature: -14.2 °C
Number of sunny days: 148 days
Number of rainy days: 199 days
Number of snow days: 18 days
Look at detailed online map of Mount Joy
* Weather data for Mount Joy 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) | 15.0 | 18.1 | 15.8 | 27.3 | 30.3 | 31.5 | 31.5 | 31.9 | 30.6 | 26.2 | 16.9 | 12.8 |
| Average daytime temperature (°C) | 5.2 | 8.3 | 7.7 | 16.9 | 20.8 | 24.1 | 27.8 | 25.8 | 22.4 | 16.3 | 9.2 | 6.6 |
| Average temperature (°C) | 1.8 | 2.0 | 2.4 | 10.3 | 14.2 | 18.4 | 22.1 | 20.2 | 17.1 | 11.9 | 4.3 | 3.1 |
| Average night temperature (°C) | -0.9 | -2.9 | -1.7 | 4.7 | 7.4 | 12.9 | 16.9 | 15.5 | 12.7 | 8.1 | 0.2 | 0.2 |
| Absolute minimum temperature (°C) | -6.2 | -14.2 | -8.3 | -3.7 | 0.9 | 6.6 | 12.3 | 11.2 | 6.6 | 0.9 | -7.7 | -5.9 |
| 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 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| 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) | 2.9 | 6.6 | 6.2 | 8.3 | 10.8 | 10.7 | 11.5 | 10.5 | 8.7 | 6.3 | 7.0 | 3.3 |
| Precipitation (mm) | 98 | 68 | 89 | 69 | 38 | 107 | 75 | 157 | 54 | 82 | 64 | 84 |
| Sunny days | 8 | 10 | 8 | 12 | 22 | 10 | 8 | 9 | 16 | 16 | 18 | 11 |
| Rainy days | 17 | 16 | 18 | 18 | 9 | 20 | 23 | 22 | 14 | 15 | 10 | 17 |
| Snow days | 6 | 2 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 |
The best time to visit Mount Joy during the most sunny months:
The largest precipitation sum in Mount Joy is at