St. Clair Weather Forecast

    • 65
    • 82

    Slight Chance Rain Showers

    • 63
    • 83

    Chance Rain Showers

    • 67
    • 85

    Chance Rain Showers

    • 69
    • 87

    Rain Showers

    • 65
    • 84

    Rain Showers Likely

    • 63
    • 81

    Partly Sunny

    • 64
    • 85

    Partly Sunny

Today 24 Jul Allegheny

Considerable cloudiness. Near steady temperature around 80. Southeast Winds 5 to 10 Mph.

Tonight 24 Jul Allegheny

Mostly cloudy. A chance of Showers after midnight. Lows in the mid 60s. Southeast Winds 5 to 10 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St. Clair Temperature Statistics

July Temperature

Pittsburgh - Allegheny County Airport (4.3 miles)

  • Lowest 20 July, 2026

    59 °F

  • Average July

    76.1 °F

  • Highest 2 July, 2026

    93 °F

Climate (2021–2026)

Pittsburgh - Allegheny County Airport (4.3 miles)

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    63.4 °F
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