Monongahela Weather Forecast

    • 67
    • 85

    Rain Showers

    • 59
    • 81

    Mostly Cloudy

    • 66
    • 80

    Rain Showers

    • 62
    • 81

    Rain Showers

    • 61
    • 76

    Chance Rain Showers

    • 59
    • 75

    Chance Rain Showers

Today 17 Sep Washington

A chance of Thunderstorms. Showers. Highs in the lower 80s. Southwest Winds 5 to 10 Mph. Chance of rain 80 percent.

Tonight 17 Sep Washington

Mostly cloudy. A chance of Showers and Thunderstorms in the evening. Warm with Lows in the mid 60s. Northwest Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Real-Time

Monongahela Temperature Statistics

September Temperature

Pittsburgh - Allegheny County Airport (9.9 miles)

  • Lowest 15 September, 2026

    53.1 °F

  • Average September

    71.9 °F

  • Highest 2 September, 2026

    91 °F

Climate (2021–2026)

Pittsburgh - Allegheny County Airport (9.9 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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