Irwin Weather Forecast

    • 63
    • 82

    Chance Thunderstorms

    • 60
    • 80

    Decreasing Clouds

    • 62
    • 80

    Rain Showers Likely

    • 58
    • 78

    Chance Thunderstorms

    • 61
    • 79

    Partly Sunny

    • 61
    • 80

    Chance Rain Showers

    • 57
    • 76

    Chance Thunderstorms

Today 17 Aug Westmoreland

Showers likely with a chance of Thunderstorms. Near steady temperature in the upper 70s. West Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 17 Aug Westmoreland

Partly cloudy. Patchy fog early this Evening, then Areas of fog. Lows in the lower 60s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Irwin Temperature Statistics

August Temperature

Pittsburgh - Allegheny County Airport (11.2 miles)

  • Lowest 4 August, 2026

    60.1 °F

  • Average August

    72.9 °F

  • Highest 4 August, 2026

    86 °F

Climate (2021–2026)

Pittsburgh - Allegheny County Airport (11.2 miles)

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    63.3 °F
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