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.

Fair

56°F

13°C

Humidity 100%
Wind Speed Calm
Barometer 30.09 in (1020.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 4 Aug 1:56 am EDT
Extended Forecast for

South New Castle PA

  • Overnight

    Overnight: Areas of fog. Otherwise, mostly clear, with a low around 52. Calm wind.

    Low: 52 °F

    Areas Fog

  • Tuesday

    Tuesday: Areas of fog before 9am. Otherwise, sunny, with a high near 87. Calm wind.

    High: 87 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Scattered showers between 1pm and 2pm, then scattered showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Mostly Sunny
    then
    Scattered
    T-storms

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms before 2am, then isolated showers. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Scattered
    T-storms then
    Scattered
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 85. Chance of precipitation is 80%.

    High: 85 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 65. Chance of precipitation is 80%.

    Low: 65 °F

    Showers then
    Chance
    T-storms

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly clear, with a low around 52. Calm wind.
Tuesday
Areas of fog before 9am. Otherwise, sunny, with a high near 87. Calm wind.
Tuesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 64. Calm wind.
Wednesday
Scattered showers between 1pm and 2pm, then scattered showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Scattered showers and thunderstorms before 2am, then isolated showers. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm before 8am, then a chance of showers between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 85. Chance of precipitation is 80%.
Friday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 65. Chance of precipitation is 80%.
Saturday
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Saturday Night
A chance of thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 88.
Sunday Night
A chance of showers. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 88. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
South New Castle PA
 40.97°N 80.37°W (Elev. 797 ft)
Last Update:
2:21 am EDT Aug 4, 2026
Forecast Valid:
2am EDT Aug 4, 2026-6pm EDT Aug 10, 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