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.

Overcast

64°F

18°C

Humidity 96%
Wind Speed Calm
Barometer 29.95 in (1014.8 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 27 Aug 5:56 am EDT
Extended Forecast for

Mercer PA

  • Today

    Today: Isolated showers and thunderstorms before 9am, then isolated showers and thunderstorms after 1pm. Partly sunny, with a high near 81. South wind 5 to 7 mph becoming west in the afternoon. Chance of precipitation is 20%.

    High: 81 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Areas of fog after 1am. Otherwise, partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Partly Cloudy
    then Areas
    Fog

  • Friday

    Friday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 79. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 79 °F

    Areas Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after midnight. Otherwise, mostly clear, with a low around 55. North wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Sunny, with a high near 81. Light and variable wind.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Isolated showers and thunderstorms before 9am, then isolated showers and thunderstorms after 1pm. Partly sunny, with a high near 81. South wind 5 to 7 mph becoming west in the afternoon. Chance of precipitation is 20%.
Tonight
Areas of fog after 1am. Otherwise, partly cloudy, with a low around 59. Calm wind.
Friday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 79. Calm wind becoming north 5 to 7 mph in the afternoon.
Friday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 55. North wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 81. Light and variable wind.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Mostly cloudy, with a low around 66.
Monday
A chance of showers after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 30%.
Monday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 87.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 85. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer PA
 41.23°N 80.25°W (Elev. 1234 ft)
Last Update:
5:11 am EDT Aug 27, 2026
Forecast Valid:
6am EDT Aug 27, 2026-6pm EDT Sep 2, 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