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

Hazardous Weather Conditions

Current conditions at

New Castle Municipal Airport (KUCP)

Lat: 41.02°NLon: 80.42°WElev: 1072ft.

Fair

81°F

27°C

Humidity 45%
Wind Speed S 7 mph
Barometer 30.23 in (1024.6 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 15 Sep 4:56 pm EDT
Extended Forecast for

Mercer PASimilar City Names

  • Tonight

    Tonight: Partly cloudy, with a low around 63. South wind 5 to 7 mph becoming calm after midnight.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Scattered showers before 2pm, then scattered showers and thunderstorms after 3pm. Partly sunny, with a high near 83. Light and variable wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Scattered
    Showers then
    Scattered
    T-storms

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Scattered
    T-storms then
    Scattered
    Showers

  • Thursday

    Thursday: Showers and thunderstorms before 11am, then showers between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. High near 81. Light and variable wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 61. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Partly sunny, with a high near 76. Chance of precipitation is 50%.

    High: 76 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 63. South wind 5 to 7 mph becoming calm after midnight.
Wednesday
Scattered showers before 2pm, then scattered showers and thunderstorms after 3pm. Partly sunny, with a high near 83. Light and variable wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and thunderstorms before 11am, then showers between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. High near 81. Light and variable wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 61. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 55.
Saturday
A chance of showers after 2pm. Partly sunny, with a high near 76. Chance of precipitation is 50%.
Saturday Night
A chance of showers before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 62. Chance of precipitation is 80%.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Cloudy, with a high near 78. Chance of precipitation is 70%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 50%.
Monday
A chance of showers. Mostly cloudy, with a high near 75. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 73. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer PASimilar City Names
 41.23°N 80.25°W (Elev. 1234 ft)
Last Update:
4:41 pm EDT Sep 15, 2026
Forecast Valid:
5pm EDT Sep 15, 2026-6pm EDT Sep 22, 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