Irwin Weather Forecast

    • 49
    • 68

    Decreasing Clouds

    • 60
    • 82

    Rain Showers Likely

    • 63
    • 83

    Chance Thunderstorms

    • 68
    • 91

    Mostly Sunny

    • 67
    • 90

    Rain Showers Likely

    • 54
    • 79

    Rain Showers

    • 52
    • 70

    Partly Sunny

Today 15 May Westmoreland

Partly sunny. Near steady temperature in the mid 60s. West Winds 5 to 10 Mph.

Tonight 15 May Westmoreland

Mainly clear. Lows in the upper 40s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Irwin Temperature Statistics

May Temperature

Pittsburgh - Allegheny County Airport (11.2 miles)

  • Lowest 2 May, 2026

    34 °F

  • Average May

    53.3 °F

  • Highest 5 May, 2026

    73.9 °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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