Average annual temperature is 13.4 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -10.3 °C
Number of sunny days: 183 days
Number of rainy days: 177 days
Number of snow days: 5 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) | 17.7 | 20.4 | 20.6 | 30.5 | 29.6 | 34.4 | 34.6 | 32.4 | 34.3 | 27.6 | 22.3 | 16.6 |
| Average daytime temperature (°C) | 8.5 | 10.2 | 11.3 | 20.3 | 22.9 | 26.9 | 30.5 | 28.6 | 24.6 | 19.7 | 11.8 | 9.2 |
| Average temperature (°C) | 4.8 | 4.7 | 5.7 | 13.7 | 16.2 | 20.7 | 25.0 | 23.4 | 19.9 | 14.6 | 6.7 | 5.1 |
| Average night temperature (°C) | 1.8 | 0.3 | 1.1 | 8.3 | 9.9 | 15.4 | 20.5 | 19.1 | 15.9 | 10.4 | 2.6 | 1.9 |
| Absolute minimum temperature (°C) | -3.8 | -10.3 | -5.3 | 1.5 | 3.7 | 11.1 | 17.6 | 15.1 | 10.5 | 3.7 | -5.1 | -3.4 |
| 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) | 4.7 | 6.7 | 7.4 | 9.0 | 11.4 | 10.5 | 12.2 | 10.5 | 8.1 | 8.1 | 7.5 | 4.5 |
| Precipitation (mm) | 81 | 44 | 64 | 143 | 21 | 125 | 96 | 101 | 137 | 68 | 64 | 129 |
| Sunny days | 12 | 17 | 14 | 16 | 18 | 12 | 9 | 13 | 14 | 21 | 21 | 16 |
| Rainy days | 19 | 9 | 16 | 14 | 13 | 18 | 22 | 18 | 16 | 10 | 9 | 13 |
| Snow days | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The best time to visit Mount Joy during the most sunny months:
The largest precipitation sum in Mount Joy is at