Carnegie Weather Forecast

    • 68
    • 80

    Chance Rain Showers

    • 72
    • 86

    Thunderstorms Likely

    • 62
    • 83

    Rain Showers Likely

    • 61
    • 81

    Partly Sunny

    • 68
    • 85

    Chance Rain Showers

    • 71
    • 90

    Chance Thunderstorms

Today 18 Jul Allegheny

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms this afternoon. Highs around 80. East Winds around 5 Mph. Chance of rain 40 percent.

Tonight 18 Jul Allegheny

Partly cloudy in the Evening, then becoming mostly cloudy. A slight chance of Showers and Thunderstorms. Patchy fog after midnight. Humid with Lows in the upper 60s. East Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

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Carnegie Temperature Statistics

July Temperature

Pittsburgh - Allegheny County Airport (9.3 miles)

  • Lowest 4 July, 2025

    64.7 °F

  • Average July

    76.3 °F

  • Highest 7 July, 2025

    89.7 °F

Climate (2020–Present)

Pittsburgh - Allegheny County Airport (9.3 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    54.7 °F

  • Average High 2020–2025

    63.4 °F
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