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.

Partly Cloudy

66°F

19°C

Humidity 96%
Wind Speed Calm
Barometer 30.01 in (1017.1 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 11 Sep 12:56 am EDT
Extended Forecast for

Slippery Rock PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 79. Calm wind becoming east around 5 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. Calm wind becoming east around 5 mph after midnight.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 79. South wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Slight Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 58. Calm wind.
Friday
Sunny, with a high near 79. Calm wind becoming east around 5 mph.
Friday Night
Partly cloudy, with a low around 60. Calm wind becoming east around 5 mph after midnight.
Saturday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 79. South wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms likely before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. 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 before 8pm. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Thursday
Showers likely. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Slippery Rock PA
 41.08°N 80.06°W (Elev. 1237 ft)
Last Update:
11:36 pm EDT Sep 10, 2026
Forecast Valid:
1am EDT Sep 11, 2026-6pm EDT Sep 17, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation