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.

Partly Cloudy

71°F

22°C

Humidity 66%
Wind Speed SE 6 mph
Barometer 30.09 in (1018.7 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 24 Jul 11:51 pm EDT
Extended Forecast for

Carnegie PA

  • Overnight

    Overnight: Isolated showers. Increasing clouds, with a low around 65. Southeast wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Isolated
    Showers

  • Saturday

    Saturday: Isolated showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Light and variable wind becoming south around 5 mph in the morning. Chance of precipitation is 20%.

    High: 82 °F

    Isolated
    Showers then
    Isolated
    T-storms

  • Saturday Night

    Saturday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 63. Light and variable wind.

    Low: 63 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.

    High: 84 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Isolated showers and thunderstorms before 2am, then scattered showers between 2am and 5am, then scattered showers and thunderstorms after 5am. Mostly cloudy, with a low around 66. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Isolated
    T-storms then
    Scattered
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 90%.

    Low: 68 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 83. Chance of precipitation is 80%.

    High: 83 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 8pm. Low around 65. Chance of precipitation is 80%.

    Low: 65 °F

    Showers then
    Partly Cloudy

Detailed Forecast

Overnight
Isolated showers. Increasing clouds, with a low around 65. Southeast wind 3 to 5 mph. Chance of precipitation is 20%.
Saturday
Isolated showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Light and variable wind becoming south around 5 mph in the morning. Chance of precipitation is 20%.
Saturday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 63. Light and variable wind.
Sunday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
Isolated showers and thunderstorms before 2am, then scattered showers between 2am and 5am, then scattered showers and thunderstorms after 5am. Mostly cloudy, with a low around 66. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 90%.
Tuesday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 83. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 8pm. Low around 65. Chance of precipitation is 80%.
Wednesday
A chance of showers after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 64.
Friday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Carnegie PA
 40.42°N 80.07°W (Elev. 912 ft)
Last Update:
12:06 am EDT Jul 25, 2026
Forecast Valid:
12am EDT Jul 25, 2026-6pm EDT Jul 31, 2026
 
Forecast Discussion
 
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Additional Resources

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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