Average annual temperature is 12.7 °C
Absolute maximum temperature: 33.5 °C
Absolute minimum temperature: -9.5 °C
Number of sunny days: 176 days
Number of rainy days: 182 days
Number of snow days: 7 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) | 16.2 | 22.7 | 23.3 | 27.5 | 29.0 | 32.1 | 32.9 | 33.5 | 31.9 | 28.5 | 23.5 | 16.4 |
| Average daytime temperature (°C) | 7.7 | 12.2 | 12.1 | 18.5 | 22.3 | 26.2 | 29.4 | 28.4 | 25.4 | 19.0 | 12.4 | 9.3 |
| Average temperature (°C) | 3.3 | 5.3 | 5.5 | 11.8 | 15.9 | 20.1 | 23.4 | 22.3 | 19.4 | 13.7 | 6.6 | 4.5 |
| Average night temperature (°C) | 0.1 | 0.4 | 0.7 | 6.1 | 10.5 | 14.7 | 18.8 | 17.4 | 14.3 | 9.5 | 2.4 | 1.1 |
| Absolute minimum temperature (°C) | -7.3 | -9.5 | -8.0 | -0.6 | 3.4 | 9.7 | 15.2 | 12.1 | 9.8 | 1.5 | -7.5 | -5.5 |
| 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 | 10.7 | 12.0 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 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) | 4.2 | 7.5 | 7.7 | 9.6 | 10.1 | 11.4 | 11.7 | 10.8 | 10.0 | 7.4 | 7.2 | 5.6 |
| Precipitation (mm) | 121 | 61 | 111 | 90 | 59 | 87 | 76 | 112 | 49 | 66 | 45 | 77 |
| Sunny days | 8 | 14 | 18 | 14 | 18 | 13 | 10 | 16 | 17 | 15 | 20 | 13 |
| Rainy days | 20 | 12 | 11 | 16 | 13 | 17 | 21 | 15 | 13 | 16 | 10 | 18 |
| Snow days | 3 | 2 | 2 | 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