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.

Overcast

78°F

26°C

Humidity 64%
Wind Speed S 5 mph
Barometer 29.86 in (1012.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 22 Aug 3:56 pm EDT
Extended Forecast for

3 Miles WSW Mercer PA

Severe T-storm Watch until August 22, 09:00pm
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until August 22, 09:00pm

    NOW until 9:00pm Sat

    Severe T-storm Watch

  • This Afternoon

    High: 81 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms, mainly between 10pm and 1am. Some of the storms could be severe. Low around 59. Southwest wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Severe
    Thunderstorms
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 74. West wind 8 to 13 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly between 9pm and 1am. Mostly cloudy, with a low around 54. West wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 71. West wind 7 to 13 mph.

    High: 71 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Showers and thunderstorms likely. Some of the storms could be severe. Mostly cloudy, with a high near 81. South wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms, mainly between 10pm and 1am. Some of the storms could be severe. Low around 59. Southwest wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 74. West wind 8 to 13 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms, mainly between 9pm and 1am. Mostly cloudy, with a low around 54. West wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 71. West wind 7 to 13 mph.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Mostly cloudy, with a low around 60.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Mercer PA
 41.21°N 80.28°W (Elev. 1132 ft)
Last Update:
2:22 pm EDT Aug 22, 2026
Forecast Valid:
4pm EDT Aug 22, 2026-6pm EDT Aug 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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