Irwin Weather Forecast

    • 67
    • 86

    Rain Showers Likely

    • 63
    • 81

    Rain Showers Likely

    • 60
    • 78

    Chance Rain Showers

    • 59
    • 81

    Partly Sunny

    • 63
    • 84

    Mostly Cloudy

    • 65
    • 85

    Chance Rain Showers

Today 27 Jul Westmoreland

Partly sunny. Patchy fog this morning. Scattered Thunderstorms with isolated Showers this afternoon. Highs in the mid 80s. West Winds around 5 Mph. Chance of rain 40 percent.

Tonight 27 Jul Westmoreland

Mostly cloudy with a chance of Thunderstorms. A chance of Showers in the Evening, then Showers likely after midnight. Humid with Lows in the upper 60s. South Winds 5 to 10 Mph. Chance of rain 70 percent.

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Irwin Temperature Statistics

July Temperature

Pittsburgh - Allegheny County Airport (11.2 miles)

  • Lowest 23 July, 2026

    53.1 °F

  • Average July

    75.3 °F

  • Highest 2 July, 2026

    93 °F

Climate (2021–2026)

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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