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

49°F

9°C

Humidity 77%
Wind Speed Calm
Barometer 30.23 in (1025.3 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 21 May 2:56 am EDT
Extended Forecast for

Slippery Rock PA

  • Overnight

    Overnight: Cloudy, with a low around 45. North wind around 6 mph.

    Low: 45 °F

    Cloudy

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 68. Northeast wind around 8 mph.

    High: 68 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. East wind 5 to 9 mph.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: A chance of rain after 2pm. Partly sunny, with a high near 67. East wind 11 to 13 mph. Chance of precipitation is 30%.

    High: 67 °F

    Partly Sunny
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain, mainly after 8pm. Low around 47. East wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Rain Likely
    then Rain

  • Saturday

    Saturday: Rain and possibly a thunderstorm before 11am, then rain between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. High near 61. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 61 °F

    Showers

  • Saturday Night

    Saturday Night: Showers, mainly before 2am. Low around 52. Chance of precipitation is 90%.

    Low: 52 °F

    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Showers
    Likely

Detailed Forecast

Overnight
Cloudy, with a low around 45. North wind around 6 mph.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 68. Northeast wind around 8 mph.
Thursday Night
Partly cloudy, with a low around 48. East wind 5 to 9 mph.
Friday
A chance of rain after 2pm. Partly sunny, with a high near 67. East wind 11 to 13 mph. Chance of precipitation is 30%.
Friday Night
Rain, mainly after 8pm. Low around 47. East wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Rain and possibly a thunderstorm before 11am, then rain between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. High near 61. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers, mainly before 2am. Low around 52. Chance of precipitation is 90%.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.
Monday Night
Mostly cloudy, with a low around 58.
Tuesday
Mostly cloudy, with a high near 81.
Tuesday Night
Mostly cloudy, with a low around 59.
Wednesday
Partly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Slippery Rock PA
 41.08°N 80.06°W (Elev. 1237 ft)
Last Update:
2:21 am EDT May 21, 2026
Forecast Valid:
3am EDT May 21, 2026-6pm EDT May 27, 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