New Castle Weather: December
 |
Average Day Temperature: | 42.3°F |
|
Average Night Temperature: | 34.4°F |
|
Sea Water Temperature: | 42.5°F |
|
Number of Sunny Days: | 12 days |
| Sunshine Hours: | 9.4 - 9.6 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.0 in | |
| detailed information | ||
14 day weather
forecast
forecast
| New Castle |
Sea Water
Temperature
Temperature
| New Castle |
Air Temperature in December, °F
The highest day temperature in December 2025 was 54°F. The lowest night temperature was 11°F. The average values for day and night temperatures during December were 37.5°F и 28.3°F respectivly.
New Castle Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for New Castle was 39.6°F. The maximum and minimum values were 36.0°F and 46.6°F respectively.
Sunny, Cloudy and Gloomy days
You can expect various weather conditions during December. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in December, in
Precipitation total in December for New Castle is 1.0 in.
Wind Speed in December, mph
The average wind speed in December is 7.9 mph.
Average Sunny Hours Per Day
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for New Castle in December is 5.2 hours.
New Castle on the Weather Map
USA Resorts:
NAME
F°
| Chicago |  |
+12 |
| Hawaii |  |
+80 |
| Honolulu | |
+80 |
| Houston |  |
+62 |
| Las Vegas | |
+44 |
| Los Angeles | |
+56 |
| Maui |  |
+74 |
| Miami | |
+64 |
| Miami Beach | |
+70 |
| New York | |
+12 |
| San Diego | |
+58 |
| San Francisco | |
+50 |
| Sarasota | |
+60 |
| Tampa | |
+60 |
| Washington | |
+16 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
New Castle
Local time: 12:59
29 jan, thursday
| 1500 |  |
18°F | SE 11 mph |
| 1800 |  |
16°F | E 6 mph |
| 2100 |  |
6°F | SE 10 mph |
30 jan, friday
| 0000 | |
4°F | SE 7 mph |
| 0300 | |
6°F | SE 6 mph |
| 0600 | |
4°F | SE 6 mph |
| 0900 |  |
4°F | SE 9 mph |
| 1200 | |
16°F | SE 11 mph |