Upper St Clair Weather Forecast

    • 53
    • 76

    Rain Showers

    • 62
    • 70

    Rain Showers

    • 39
    • 69

    Rain Showers

    • 34
    • 51

    Mostly Sunny

    • 38
    • 61

    Mostly Sunny

    • 43
    • 65

    Mostly Cloudy

Today 14 Oct Allegheny

Scattered Thunderstorms. Showers, warm with Highs in the mid 70s. West Winds 5 to 10 Mph. Chance of rain 90 percent.

Tonight 14 Oct Allegheny

Mostly cloudy. A chance of Showers with isolated Thunderstorms in the evening. Lows in the lower 50s. North Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Upper St Clair Temperature Statistics

October Temperature

Pittsburgh - Allegheny County Airport (8.1 miles)

  • Lowest 7 October, 2026

    41 °F

  • Average October

    59.2 °F

  • Highest 1 October, 2026

    81 °F

Climate (2021–2026)

Pittsburgh - Allegheny County Airport (8.1 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    63.2 °F
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