Irwin Weather Forecast

    • 56
    • 77

    Decreasing Clouds

    • 41
    • 83

    Rain Showers

    • 32
    • 52

    Chance Rain Showers

    • 29
    • 48

    Mostly Sunny

    • 50
    • 67

    Partly Sunny

    • 48
    • 71

    Slight Chance Thunderstorms

Today 17 Apr Westmoreland

Partly sunny in the Morning, then clearing. Warm with Highs in the mid 70s. Northwest Winds around 5 Mph.

Tonight 17 Apr Westmoreland

Mainly clear. Mild. Lows in the mid 50s. Southeast Winds around 5 Mph.

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Irwin Temperature Statistics

April Temperature

Pittsburgh - Allegheny County Airport (11.2 miles)

  • Lowest 8 April, 2026

    26.1 °F

  • Average April

    56.8 °F

  • Highest 4 April, 2026

    82 °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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