National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Pittsburgh International Airport (KPIT)

Lat: 40.48°NLon: 80.21°WElev: 1203ft.

Mostly Cloudy

54°F

12°C

Humidity 67%
Wind Speed S 5 mph
Barometer 30.05 in (1018.2 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 16 May 7:51 am EDT
Extended Forecast for

Carnegie PA

  • Today

    Today: A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 11pm, then a chance of showers. Mostly cloudy, with a low around 61. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. Light southeast wind.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 90. Southwest wind 5 to 11 mph.

    High: 90 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 2pm. High near 82. Chance of precipitation is 90%.

    High: 82 °F

    Showers

Detailed Forecast

Today
A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 11pm, then a chance of showers. Mostly cloudy, with a low around 61. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 64. Light southeast wind.
Monday
Sunny and hot, with a high near 90. Southwest wind 5 to 11 mph.
Monday Night
Mostly clear, with a low around 70.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.
Wednesday
Showers, with thunderstorms also possible after 2pm. High near 82. Chance of precipitation is 90%.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 70.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carnegie PA
 40.4°N 80.11°W (Elev. 997 ft)
Last Update:
6:35 am EDT May 16, 2026
Forecast Valid:
8am EDT May 16, 2026-6pm EDT May 22, 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