Average annual temperature is 15.1 °C
Absolute maximum temperature: 35.3 °C
Absolute minimum temperature: -9.1 °C
Number of sunny days: 180 days
Number of rainy days: 185 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) | 19.5 | 22.0 | 22.5 | 30.1 | 28.7 | 30.3 | 35.3 | 34.2 | 34.9 | 28.2 | 23.5 | 17.9 |
| Average daytime temperature (°C) | 11.4 | 12.3 | 13.7 | 21.5 | 21.3 | 26.2 | 31.1 | 29.7 | 26.5 | 21.8 | 14.3 | 11.6 |
| Average temperature (°C) | 7.1 | 7.4 | 8.0 | 15.3 | 16.3 | 20.9 | 26.0 | 24.8 | 21.9 | 16.3 | 9.1 | 7.4 |
| Average night temperature (°C) | 3.5 | 2.8 | 3.1 | 10.5 | 12.1 | 16.2 | 21.9 | 20.9 | 18.1 | 12.1 | 5.1 | 3.7 |
| Absolute minimum temperature (°C) | -3.6 | -9.1 | -3.5 | 0.9 | 5.4 | 11.0 | 19.1 | 16.5 | 13.1 | 6.1 | -4.5 | -2.5 |
| 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 | 14.6 | 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) | 5.3 | 7.1 | 7.8 | 9.5 | 11.1 | 11.3 | 11.6 | 10.4 | 8.5 | 8.9 | 7.6 | 5.7 |
| Precipitation (mm) | 67 | 56 | 54 | 144 | 77 | 147 | 102 | 58 | 155 | 54 | 45 | 159 |
| Sunny days | 14 | 15 | 15 | 17 | 15 | 12 | 7 | 9 | 15 | 20 | 23 | 18 |
| Rainy days | 17 | 13 | 16 | 13 | 16 | 18 | 24 | 22 | 15 | 11 | 7 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Mount Joy during the most sunny months:
The largest precipitation sum in Mount Joy is at