Average annual temperature is 13.1 °C
Absolute maximum temperature: 36.0 °C
Absolute minimum temperature: -10.5 °C
Number of sunny days: 186 days
Number of rainy days: 176 days
Number of snow days: 3 days
Look at detailed online map of Greencastle
* Weather data for Greencastle 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) | 15.6 | 21.7 | 23.6 | 30.6 | 28.5 | 33.0 | 36.0 | 33.2 | 34.5 | 27.7 | 22.1 | 15.2 |
| Average daytime temperature (°C) | 8.2 | 10.9 | 11.8 | 20.7 | 22.2 | 26.5 | 31.0 | 29.4 | 25.3 | 19.6 | 12.0 | 9.1 |
| Average temperature (°C) | 4.2 | 4.8 | 5.6 | 13.4 | 15.5 | 20.1 | 24.9 | 23.3 | 19.6 | 14.0 | 6.2 | 4.6 |
| Average night temperature (°C) | 1.1 | 0.1 | 0.8 | 7.5 | 9.2 | 14.3 | 19.7 | 18.2 | 14.8 | 9.5 | 1.7 | 1.0 |
| Absolute minimum temperature (°C) | -3.4 | -10.5 | -6.1 | 0.6 | 3.3 | 8.6 | 16.6 | 14.3 | 9.5 | 2.8 | -6.1 | -4.9 |
| 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 | 14.0 | 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 | 14.9 | 14.7 | 13.7 | 12.5 | 11.2 | 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) | 4.9 | 6.9 | 7.4 | 9.2 | 10.5 | 10.8 | 12.0 | 11.0 | 8.8 | 7.9 | 7.7 | 4.6 |
| Precipitation (mm) | 70 | 38 | 76 | 110 | 34 | 105 | 90 | 72 | 115 | 46 | 52 | 94 |
| Sunny days | 13 | 18 | 11 | 17 | 18 | 13 | 10 | 12 | 17 | 18 | 23 | 16 |
| Rainy days | 18 | 8 | 20 | 13 | 13 | 17 | 21 | 19 | 13 | 13 | 7 | 14 |
| Snow days | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Greencastle during the most sunny months:
The largest precipitation sum in Greencastle is at