Irwin Weather Forecast

    • 66
    • 89

    Thunderstorms Likely

    • 47
    • 77

    Rain Showers

    • 52
    • 68

    Chance Rain Showers

    • 54
    • 69

    Rain Showers

    • 59
    • 73

    Rain Showers

    • 61
    • 80

    Rain Showers Likely

Today 19 May Westmoreland

Partly cloudy. Unseasonably warm with Highs in the upper 80s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 19 May Westmoreland

Showers and Thunderstorms likely. Warm with Lows in the mid 60s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

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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

    53.5 °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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