Average annual temperature is 7.6 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -17.8 °C
Number of sunny days: 239 days
Number of rainy days: 83 days
Number of snow days: 43 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) | 5.1 | 6.0 | 9.2 | 16.9 | 26.3 | 31.3 | 36.7 | 35.6 | 31.5 | 25.7 | 19.3 | 6.9 |
| Average daytime temperature (°C) | -0.5 | -0.2 | 3.2 | 9.3 | 20.6 | 25.4 | 33.0 | 31.6 | 26.9 | 18.6 | 10.2 | 1.9 |
| Average temperature (°C) | -4.2 | -5.2 | -2.3 | 2.0 | 12.0 | 17.0 | 23.4 | 22.5 | 17.5 | 9.6 | 2.1 | -3.9 |
| Average night temperature (°C) | -7.4 | -9.6 | -7.0 | -3.6 | 4.0 | 8.3 | 13.5 | 13.7 | 8.9 | 2.7 | -3.5 | -8.8 |
| Absolute minimum temperature (°C) | -14.4 | -17.0 | -15.7 | -11.2 | 0.2 | 3.9 | 8.6 | 9.9 | 2.5 | -7.3 | -13.2 | -17.8 |
| 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 | 14.6 | 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) | 5.6 | 8.0 | 8.0 | 10.9 | 12.2 | 13.0 | 13.3 | 12.3 | 11.2 | 9.5 | 8.1 | 6.9 |
| Precipitation (mm) | 76 | 53 | 102 | 59 | 15 | 18 | 0 | 28 | 2 | 43 | 20 | 24 |
| Sunny days | 13 | 16 | 12 | 18 | 21 | 20 | 27 | 24 | 23 | 21 | 23 | 21 |
| Rainy days | 7 | 2 | 8 | 7 | 10 | 10 | 4 | 7 | 7 | 10 | 6 | 5 |
| Snow days | 11 | 10 | 11 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
The best time to visit New Castle during the most sunny months:
The largest precipitation sum in New Castle is at