Irwin Weather Forecast

    • 52
    • 64

    Chance Rain

    • 50
    • 67

    Rain Showers

    • 54
    • 64

    Rain Showers

    • 61
    • 81

    Rain Showers Likely

    • 60
    • 77

    Rain Showers Likely

    • 61
    • 80

    Chance Rain Showers

Today 21 May Westmoreland

Considerable cloudiness with rain likely in the Morning, then partly sunny in the afternoon. Highs in the upper 60s. Northeast Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 21 May Westmoreland

Mostly cloudy. Lows in the lower 50s. East Winds 5 to 10 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

    55.9 °F

  • Highest 18 May, 2026

    87.1 °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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