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.

Fair

27°F

-3°C

Humidity 34%
Wind Speed NE 6 mph
Barometer 30.27 in (1028.1 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 8 Dec 12:56 pm EST
Extended Forecast for

Mercer PA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 25. Northeast wind 6 to 8 mph.

    High: 25 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 8. Wind chill values as low as zero. Calm wind becoming southeast around 5 mph after midnight.

    Low: 8 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: A chance of snow between 11am and 3pm. Increasing clouds, with a high near 33. South wind 6 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 33 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: Snow, mainly after 1am. Low around 28. Southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 28 °F

    Slight Chance
    Snow then
    Snow

  • Wednesday

    Wednesday: Snow, possibly mixed with rain. High near 38. South wind 14 to 17 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Snow, possibly mixed with rain, becoming all snow after 7pm. Low around 22. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 22 °F

    Rain/Snow
    then Snow

  • Thursday

    Thursday: Snow likely. Mostly cloudy, with a high near 28. Chance of precipitation is 60%.

    High: 28 °F

    Snow Likely

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 17. Chance of precipitation is 50%.

    Low: 17 °F

    Chance Snow

  • Friday

    Friday: Snow likely, mainly after 1pm. Mostly cloudy, with a high near 28. Chance of precipitation is 60%.

    High: 28 °F

    Snow Likely

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 25. Northeast wind 6 to 8 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 8. Wind chill values as low as zero. Calm wind becoming southeast around 5 mph after midnight.
Tuesday
A chance of snow between 11am and 3pm. Increasing clouds, with a high near 33. South wind 6 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Tuesday Night
Snow, mainly after 1am. Low around 28. Southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Wednesday
Snow, possibly mixed with rain. High near 38. South wind 14 to 17 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow, possibly mixed with rain, becoming all snow after 7pm. Low around 22. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Snow likely. Mostly cloudy, with a high near 28. Chance of precipitation is 60%.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 17. Chance of precipitation is 50%.
Friday
Snow likely, mainly after 1pm. Mostly cloudy, with a high near 28. Chance of precipitation is 60%.
Friday Night
Snow. Low around 13. Chance of precipitation is 80%.
Saturday
Snow likely. Mostly cloudy, with a high near 23. Chance of precipitation is 60%.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 11. Chance of precipitation is 50%.
Sunday
A chance of snow. Mostly cloudy, with a high near 21. Chance of precipitation is 40%.
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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:
12:48 pm EST Dec 8, 2025
Forecast Valid:
1pm EST Dec 8, 2025-6pm EST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation