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

47°F

8°C

Humidity 77%
Wind Speed NW 6 mph
Barometer 29.91 in (1014.3 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 13 May 11:56 pm EDT
Extended Forecast for

4 Miles S Mercer PA

  • Overnight

    Overnight: A chance of showers, mainly between 2am and 3am. Cloudy, with a low around 42. Northwest wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, mainly before noon. Mostly cloudy, with a high near 54. Northwest wind 9 to 13 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 41. Northwest wind 5 to 8 mph.

    Low: 41 °F

    Decreasing
    Clouds

  • Friday

    Friday: Increasing clouds, with a high near 69. West wind 3 to 7 mph.

    High: 69 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 50. Calm wind becoming south around 6 mph after midnight.

    Low: 50 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 40%.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 62. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers, mainly between 2am and 3am. Cloudy, with a low around 42. Northwest wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of showers, mainly before noon. Mostly cloudy, with a high near 54. Northwest wind 9 to 13 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 41. Northwest wind 5 to 8 mph.
Friday
Increasing clouds, with a high near 69. West wind 3 to 7 mph.
Friday Night
Mostly cloudy, with a low around 50. Calm wind becoming south around 6 mph after midnight.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 40%.
Sunday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 66.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 50%.
Wednesday
Showers likely. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Mercer PA
 41.16°N 80.23°W (Elev. 1089 ft)
Last Update:
7:26 pm EDT May 13, 2026
Forecast Valid:
12am EDT May 14, 2026-6pm EDT May 20, 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