Irwin Weather Forecast

    • 17
    • 23

    Chance Snow

    • 13
    • 29

    Mostly Cloudy

    • 16
    • 28

    Mostly Cloudy

    • 15
    • 29

    Mostly Cloudy

    • 30
    • 40

    Mostly Cloudy

    • 38
    • 47

    Chance Rain

    • 31
    • 49

    Slight Chance Rain

Today 1 Jan Westmoreland

Partly sunny. Near steady temperature in the lower 20s. West Winds 10 to 15 Mph.

Tonight 1 Jan Westmoreland

Considerable cloudiness with a 50 percent chance of snow. Little or no snow accumulation. Near steady temperature around 17. Southwest Winds 5 to 10 Mph.

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Irwin Temperature Statistics

January Temperature

Pittsburgh - Allegheny County Airport (11.2 miles)

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Climate (2021–Present)

Pittsburgh - Allegheny County Airport (11.2 miles)

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  • Average Low 2021–2025

    46.1 °F

  • Average 2021–2025

    54.6 °F

  • Average High 2021–2025

    63.3 °F
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