Irwin Weather Forecast

    • 62
    • 81

    Rain Showers

    • 61
    • 81

    Partly Sunny

    • 63
    • 81

    Chance Thunderstorms

    • 58
    • 79

    Chance Thunderstorms

    • 61
    • 79

    Chance Rain Showers

    • 61
    • 80

    Chance Rain Showers

Today 17 Aug Westmoreland

Mostly cloudy with scattered Showers. Isolated Thunderstorms Early, then scattered Thunderstorms. Near steady temperature in the upper 70s. West Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 17 Aug Westmoreland

Mostly cloudy with numerous Showers and scattered Thunderstorms in the Evening, then partly cloudy after midnight. Patchy fog in the evening. Areas of fog after midnight. Humid with Lows in the lower 60s. Northwest Winds around 5 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

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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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