Irwin Weather Forecast

    • 55
    • 71

    Partly Sunny

    • 57
    • 76

    Partly Sunny

    • 61
    • 80

    Partly Sunny

    • 63
    • 82

    Slight Chance Thunderstorms

    • 60
    • 80

    Slight Chance Thunderstorms

    • 62
    • 80

    Partly Sunny

Today 24 Aug Westmoreland

Mostly sunny. Highs in the lower 70s. West Winds 10 to 15 Mph.

Tonight 24 Aug Westmoreland

Partly cloudy. Lows in the mid 50s. Southwest Winds 5 to 10 Mph.

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Irwin Temperature Statistics

August Temperature

Pittsburgh - Allegheny County Airport (11.2 miles)

  • Lowest 4 August, 2026

    60.1 °F

  • Average August

    72.2 °F

  • Highest 4 August, 2026

    86 °F

Climate (2021–2026)

Pittsburgh - Allegheny County Airport (11.2 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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