Irwin Weather Forecast

    • 47
    • 72

    Slight Chance Thunderstorms

    • 54
    • 77

    Partly Sunny

    • 57
    • 80

    Rain Showers

    • 47
    • 70

    Rain Showers

    • 45
    • 67

    Slight Chance Rain Showers

    • 51
    • 72

    Rain Showers Likely

Today 22 Apr Westmoreland

Considerable cloudiness this Morning, then becoming partly cloudy. A slight chance of Thunderstorms. Showers, mainly this morning. Highs in the lower 70s. West Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 80 percent.

Tonight 22 Apr Westmoreland

Mainly clear. Lows in the upper 40s. Northwest Winds 5 to 10 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Irwin Temperature Statistics

April Temperature

Pittsburgh - Allegheny County Airport (11.2 miles)

  • Lowest 8 April, 2026

    26.1 °F

  • Average April

    58.8 °F

  • Highest 15 April, 2026

    82.9 °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

    63.4 °F
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