Irwin Weather Forecast

    • 57
    • 77

    Rain Showers

    • 52
    • 77

    Partly Sunny

    • 59
    • 78

    Partly Sunny

    • 62
    • 82

    Chance Thunderstorms

    • 61
    • 81

    Chance Thunderstorms

    • 62
    • 81

    Chance Thunderstorms

Today 22 Jun Westmoreland

Showers with a chance of Thunderstorms this Morning, then Showers with Thunderstorms likely this afternoon. Highs in the upper 70s. Southeast Winds 10 to 15 Mph, becoming southwest this afternoon. Chance of rain near 100 percent.

Tonight 22 Jun Westmoreland

Considerable cloudiness. Showers with Thunderstorms likely in the Evening, then a slight chance of Showers and Thunderstorms after midnight. Lows in the upper 50s. Northwest Winds 5 to 10 Mph. Chance of rain 90 percent.

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Irwin Temperature Statistics

June Temperature

Pittsburgh - Allegheny County Airport (11.2 miles)

  • Lowest 16 June, 2026

    50 °F

  • Average June

    70.2 °F

  • Highest 11 June, 2026

    88 °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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