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.

Mostly Cloudy

75°F

24°C

Humidity 71%
Wind Speed Calm
Barometer 30.11 in (1020.5 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 14 Aug 10:56 am EDT
Extended Forecast for

South New Castle PA

  • Today

    Today: A slight chance of showers before 2pm. Mostly cloudy, with a high near 82. Light and variable wind. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 85. Calm wind.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 67. Light east wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: Showers likely, then showers and possibly a thunderstorm after 11am. High near 84. West wind 6 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 68. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Showers

  • Monday

    Monday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 81.

    High: 81 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Today
A slight chance of showers before 2pm. Mostly cloudy, with a high near 82. Light and variable wind. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 62. Calm wind.
Saturday
Mostly sunny, with a high near 85. Calm wind.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 67. Light east wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely, then showers and possibly a thunderstorm after 11am. High near 84. West wind 6 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 68. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 81.
Monday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 57.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South New Castle PA
 40.97°N 80.31°W (Elev. 1033 ft)
Last Update:
6:46 am EDT Aug 14, 2026
Forecast Valid:
11am EDT Aug 14, 2026-6pm EDT Aug 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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