New Castle Northwest Weather Forecast 15 Days, Weather in New Castle Northwest Today
Current weather conditions and 15 day weather forecast for New Castle Northwest, Pennsylvania, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at New Castle Northwest
| 15 December 2025 Monday -13.9 ° C / 7°F  Light snow |
Feels Like : -21.4 ° C / -6.5°F Humidity : % 87 Pressure : 1031 mb Wind Speed : 14.4 kmph / 8.9 miles from WSW  Visibility : 14 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for New Castle Northwest, PA, USA
Weather Forecast for next 15 Days for New Castle Northwest including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in New Castle Northwest, Pennsylvania state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 December 2025 Monday |  Partly Cloudy |
-15.4 ° C (4.3°F) |
-4.6 ° C (23.7°F) |
-10.4 ° C (13.3°F) |
% 75 | 0% | 0.3 | Sunrise:07:40 AM Sunset: 04:54 PM |
Moonrise:03:38 AM Moonset: 01:52 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Partly Cloudy |
-9.6 ° C (14.7°F) |
0 ° C (32°F) |
-5.1 ° C (22.7°F) |
% 69 | 0% | 0.4 | Sunrise:07:40 AM Sunset: 04:54 PM |
Moonrise:04:40 AM Moonset: 02:18 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday |  Overcast |
-5.2 ° C (22.6°F) |
3.6 ° C (38.5°F) |
-0.1 ° C (31.9°F) |
% 83 | 0% | 0.3 | Sunrise:07:41 AM Sunset: 04:55 PM |
Moonrise:05:43 AM Moonset: 02:50 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Moderate rain |
-6 ° C (21.2°F) |
8.5 ° C (47.3°F) |
1.8 ° C (35.2°F) |
% 88 | 76% | 0.1 | Sunrise:07:41 AM Sunset: 04:55 PM |
Moonrise:06:45 AM Moonset: 03:30 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Blowing snow |
-6.3 ° C (20.6°F) |
1.5 ° C (34.7°F) |
-0.8 ° C (30.5°F) |
% 84 | 86% | 0 | Sunrise:07:42 AM Sunset: 04:55 PM |
Moonrise:07:43 AM Moonset: 04:17 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Light freezing rain |
-6.5 ° C (20.2°F) |
3.2 ° C (37.7°F) |
-1 ° C (30.2°F) |
% 72 | 87% | 1 | Sunrise:07:43 AM Sunset: 04:56 PM |
Moonrise:08:34 AM Moonset: 05:13 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Moderate or heavy snow showers |
-5 ° C (23°F) |
2.4 ° C (36.3°F) |
0.8 ° C (33.4°F) |
% 89 | 87% | 1 | Sunrise:07:43 AM Sunset: 04:56 PM |
Moonrise:09:19 AM Moonset: 06:15 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Light snow showers |
-6.9 ° C (19.5°F) |
-1.6 ° C (29.1°F) |
-4.5 ° C (23.9°F) |
% 71 | 0% | 1 | Sunrise:07:44 AM Sunset: 04:57 PM |
Moonrise:09:55 AM Moonset: 07:21 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Partly Cloudy |
-3.8 ° C (25.2°F) |
6 ° C (42.9°F) |
1.5 ° C (34.7°F) |
% 69 | 0% | 2 | Sunrise:07:44 AM Sunset: 04:57 PM |
Moonrise:10:25 AM Moonset: 08:27 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday |  Patchy rain nearby |
-1.1 ° C (30°F) |
6.9 ° C (44.4°F) |
3.7 ° C (38.7°F) |
% 89 | 83% | 1 | Sunrise:07:44 AM Sunset: 04:58 PM |
Moonrise:10:51 AM Moonset: 09:35 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Partly Cloudy |
-6.4 ° C (20.5°F) |
-2.9 ° C (26.8°F) |
-4.4 ° C (24°F) |
% 57 | 0% | 2 | Sunrise:07:45 AM Sunset: 04:59 PM |
Moonrise:11:15 AM Moonset: 10:42 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Heavy snow |
-6.4 ° C (20.4°F) |
-1.9 ° C (28.5°F) |
-3.7 ° C (25.4°F) |
% 84 | 69% | 1 | Sunrise:07:45 AM Sunset: 04:59 PM |
Moonrise:11:36 AM Moonset: 11:50 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Light snow |
-14 ° C (6.8°F) |
-7.4 ° C (18.6°F) |
-10.4 ° C (13.2°F) |
% 87 | 80% | 1 | Sunrise:07:45 AM Sunset: 05:00 PM |
Moonrise:11:58 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Partly Cloudy |
-15.8 ° C (3.5°F) |
-4.5 ° C (23.8°F) |
-9.9 ° C (14.2°F) |
% 90 | 0% | 2 | Sunrise:07:46 AM Sunset: 05:01 PM |
Moonrise:12:21 PM Moonset: 01:00 AM Moon Phase ( Waxing Gibbous ) |
|
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