National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

New Castle Municipal Airport (KUCP)

Lat: 41.02°NLon: 80.42°WElev: 1072ft.

A Few Clouds

72°F

22°C

Humidity 97%
Wind Speed Calm
Barometer 29.98 in (1016.1 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 4 Sep 7:56 pm EDT
Extended Forecast for

New Castle Northwest PA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms, mainly between 1am and 3am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers, mainly before 1pm. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 81. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 81 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56. North wind around 6 mph becoming calm after midnight.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 80. Northeast wind 3 to 6 mph.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. Northeast wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms, mainly between 1am and 3am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 20%.
Saturday
A chance of showers, mainly before 1pm. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 81. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Partly cloudy, with a low around 56. North wind around 6 mph becoming calm after midnight.
Sunday
Sunny, with a high near 80. Northeast wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 55. Northeast wind around 5 mph becoming calm in the evening.
Labor Day
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Mostly cloudy, with a low around 63.
Wednesday
Partly sunny, with a high near 87.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New Castle Northwest PA
 41.02°N 80.34°W (Elev. 961 ft)
Last Update:
6:12 pm EDT Sep 4, 2026
Forecast Valid:
8pm EDT Sep 4, 2026-6pm EDT Sep 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation