Irwin Weather Forecast

    • 55
    • 73

    Increasing Clouds

    • 54
    • 77

    Slight Chance Thunderstorms

    • 58
    • 80

    Rain Showers Likely

    • 47
    • 70

    Rain Showers

    • 45
    • 67

    Slight Chance Rain Showers

    • 51
    • 72

    Rain Showers Likely

    • 48
    • 70

    Rain Showers Likely

Today 22 Apr Westmoreland

Mostly sunny with a slight chance of Showers and Thunderstorms. Warm. Near steady temperature in the lower 70s. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 22 Apr Westmoreland

Mainly clear this Evening, then becoming mostly cloudy. Mild. Lows in the lower 50s. Southwest Winds 5 to 10 Mph.

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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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