Inter County Airport Weather Forecast

    • 70
    • 85

    Rain Showers

    • 60
    • 77

    Rain Showers

    • 61
    • 78

    Partly Sunny

    • 66
    • 81

    Chance Thunderstorms

    • 64
    • 82

    Chance Rain Showers

    • 67
    • 82

    Chance Rain Showers

Today 9 Sep Westmoreland

Partly cloudy. Isolated Showers. Unseasonably warm with Highs in the mid 80s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 9 Sep Westmoreland

Partly cloudy this evening. A chance of Thunderstorms. A chance of Showers this Evening, then Showers after midnight. Warm with Lows in the upper 60s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

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Inter County Airport Temperature Statistics

September Temperature

Pittsburgh - Allegheny County Airport (7.5 miles)

  • Lowest 6 September, 2026

    57.9 °F

  • Average September

    73.5 °F

  • Highest 2 September, 2026

    91 °F

Climate (2021–2026)

Pittsburgh - Allegheny County Airport (7.5 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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