Irwin Weather Forecast

    • 45
    • 71

    Sunny

    • 49
    • 75

    Sunny

    • 51
    • 76

    Mostly Sunny

    • 50
    • 74

    Mostly Sunny

    • 52
    • 76

    Mostly Sunny

    • 58
    • 81

    Partly Sunny

Today 30 May Westmoreland

Sunny. Highs around 70. North Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 30 May Westmoreland

Clear. Lows in the mid 40s. Northeast Winds 5 to 10 Mph.

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Irwin Temperature Statistics

May Temperature

Pittsburgh - Allegheny County Airport (11.2 miles)

  • Lowest 2 May, 2026

    34 °F

  • Average May

    58.8 °F

  • Highest 18 May, 2026

    87.1 °F

Climate (2021–Present)

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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