Pittsburgh Weather Forecast

    • 58
    • 84

    Rain Showers Likely

    • 52
    • 73

    Increasing Clouds

    • 63
    • 82

    Partly Sunny

    • 68
    • 85

    Partly Sunny

    • 67
    • 86

    Rain Showers Likely

    • 62
    • 81

    Chance Rain Showers

    • 63
    • 80

    Chance Rain Showers

Today 13 Sep Allegheny

Partly sunny. Near steady temperature in the lower 80s. West Winds 5 to 10 Mph.

Tonight 13 Sep Allegheny

Mostly cloudy. A chance of Showers and Thunderstorms this evening. Lows in the upper 50s. West Winds 5 to 10 Mph, becoming northwest after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Pittsburgh Temperature Statistics

September Temperature

Pittsburgh - Allegheny County Airport (6.8 miles)

  • Lowest 6 September, 2026

    57.9 °F

  • Average September

    73.3 °F

  • Highest 2 September, 2026

    91 °F

Climate (2021–2026)

Pittsburgh - Allegheny County Airport (6.8 miles)

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    63.3 °F
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