St. Clair Weather Forecast

    • 69
    • 88

    Rain Showers

    • 72
    • 87

    Rain Showers

    • 72
    • 91

    Rain Showers

    • 62
    • 88

    Rain Showers

    • 64
    • 86

    Partly Sunny

    • 62
    • 85

    Chance Thunderstorms

Today 9 Jun Allegheny

Mostly cloudy. Showers likely with a chance of Thunderstorms in the afternoon. Some Thunderstorms may produce heavy rainfall in the afternoon. Humid with Highs in the upper 80s. South Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

Tonight 9 Jun Allegheny

Showers. Scattered Thunderstorms. Some Thunderstorms may produce heavy rainfall. Humid with Lows in the upper 60s. South Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St. Clair Temperature Statistics

June Temperature

Pittsburgh - Allegheny County Airport (4.3 miles)

  • Lowest 1 June, 2026

    52 °F

  • Average June

    68.3 °F

  • Highest 5 June, 2026

    82.9 °F

Climate (2021–Present)

Pittsburgh - Allegheny County Airport (4.3 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    63.3 °F
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