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.

Light Rain

56°F

13°C

Humidity 100%
Wind Speed N 10 mph
Barometer 30.15 in (1022.4 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 20 May 12:56 pm EDT
Extended Forecast for

Mercer PA

  • This Afternoon

    This Afternoon: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 64. North wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Showers
    Likely

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. North wind 5 to 7 mph.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70. Northeast wind around 8 mph.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 48. East wind 6 to 8 mph.

    Low: 48 °F

    Increasing
    Clouds

  • Friday

    Friday: A chance of showers after 2pm. Mostly cloudy, with a high near 65. East wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 65 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers, mainly after 8pm. Low around 50. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 50 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 2pm. High near 67. Chance of precipitation is 100%.

    High: 67 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 56. Chance of precipitation is 80%.

    Low: 56 °F

    Showers

  • Sunday

    Sunday: A chance of showers before 8am, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.

    High: 76 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

This Afternoon
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 64. North wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Mostly cloudy, with a low around 44. North wind 5 to 7 mph.
Thursday
Mostly sunny, with a high near 70. Northeast wind around 8 mph.
Thursday Night
Increasing clouds, with a low around 48. East wind 6 to 8 mph.
Friday
A chance of showers after 2pm. Mostly cloudy, with a high near 65. East wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers, mainly after 8pm. Low around 50. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Showers, with thunderstorms also possible after 2pm. High near 67. Chance of precipitation is 100%.
Saturday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 56. Chance of precipitation is 80%.
Sunday
A chance of showers before 8am, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 80. Chance of precipitation is 30%.
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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:
12:36 pm EDT May 20, 2026
Forecast Valid:
1pm EDT May 20, 2026-6pm EDT May 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation