Average annual temperature is 12.0 °C
Absolute maximum temperature: 33.0 °C
Absolute minimum temperature: -14.0 °C
Number of sunny days: 134 days
Number of rainy days: 219 days
Number of snow days: 12 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) | 17.8 | 20.4 | 21.0 | 27.9 | 29.4 | 33.0 | 31.1 | 31.3 | 31.6 | 26.7 | 18.9 | 17.4 |
| Average daytime temperature (°C) | 7.7 | 10.7 | 10.3 | 18.8 | 21.2 | 25.1 | 27.6 | 26.3 | 23.4 | 17.8 | 11.2 | 8.6 |
| Average temperature (°C) | 3.5 | 4.3 | 4.6 | 11.9 | 15.0 | 19.1 | 22.3 | 21.1 | 18.1 | 13.0 | 5.9 | 4.7 |
| Average night temperature (°C) | 0.6 | -0.8 | 0.1 | 6.3 | 9.1 | 13.7 | 18.3 | 16.8 | 13.9 | 9.0 | 1.7 | 1.6 |
| Absolute minimum temperature (°C) | -7.0 | -14.0 | -8.4 | -1.9 | 1.9 | 8.4 | 14.2 | 11.7 | 8.5 | 0.7 | -7.2 | -5.0 |
| 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) | 2.7 | 6.1 | 6.2 | 8.5 | 10.4 | 10.7 | 10.9 | 10.6 | 8.7 | 6.7 | 6.6 | 4.1 |
| Precipitation (mm) | 126 | 72 | 111 | 57 | 97 | 153 | 145 | 111 | 42 | 149 | 46 | 79 |
| Sunny days | 5 | 9 | 9 | 14 | 21 | 12 | 5 | 6 | 13 | 11 | 18 | 11 |
| Rainy days | 20 | 18 | 20 | 16 | 10 | 18 | 26 | 25 | 17 | 20 | 10 | 19 |
| Snow days | 6 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 |
The best time to visit Mount Joy during the most sunny months:
The largest precipitation sum in Mount Joy is at