Average annual temperature is 12.2 °C
Absolute maximum temperature: 32.7 °C
Absolute minimum temperature: -12.8 °C
Number of sunny days: 176 days
Number of rainy days: 177 days
Number of snow days: 12 days
Look at detailed online map of New Castle
* Weather data for New Castle 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) | 16.8 | 19.8 | 20.8 | 25.9 | 29.6 | 30.8 | 32.7 | 32.6 | 31.0 | 28.1 | 23.5 | 14.7 |
| Average daytime temperature (°C) | 5.6 | 9.9 | 10.5 | 17.1 | 22.2 | 26.1 | 28.1 | 26.8 | 25.0 | 18.3 | 11.6 | 7.9 |
| Average temperature (°C) | 2.1 | 3.6 | 4.5 | 10.7 | 16.2 | 20.4 | 23.1 | 22.0 | 19.6 | 13.3 | 6.0 | 3.9 |
| Average night temperature (°C) | -0.8 | -0.6 | 0.3 | 5.4 | 10.7 | 15.0 | 18.6 | 17.4 | 14.7 | 9.3 | 2.1 | 0.9 |
| Absolute minimum temperature (°C) | -10.7 | -12.8 | -8.6 | -2.5 | 1.8 | 9.7 | 15.4 | 11.4 | 10.2 | -4.0 | -9.4 | -7.1 |
| 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 | 11.2 | 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) | 3.7 | 7.0 | 7.1 | 8.7 | 10.6 | 10.8 | 12.0 | 11.1 | 9.8 | 7.3 | 7.8 | 4.1 |
| Precipitation (mm) | 138 | 57 | 162 | 63 | 71 | 73 | 110 | 157 | 26 | 80 | 27 | 41 |
| Sunny days | 9 | 15 | 13 | 15 | 19 | 14 | 6 | 16 | 18 | 15 | 22 | 14 |
| Rainy days | 16 | 11 | 15 | 15 | 12 | 16 | 25 | 15 | 12 | 16 | 8 | 16 |
| Snow days | 6 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit New Castle during the most sunny months:
The largest precipitation sum in New Castle is at