Monongahela Weather Forecast

    • 64
    • 74

    Rain Showers Likely

    • 65
    • 82

    Rain Showers Likely

    • 65
    • 83

    Rain Showers Likely

    • 57
    • 82

    Chance Thunderstorms

    • 62
    • 82

    Chance Rain Showers

    • 68
    • 85

    Rain Showers

    • 60
    • 83

    Chance Rain Showers

Today 11 Aug Washington

Showers and Thunderstorms likely. Some Thunderstorms may produce heavy rainfall. Highs in the upper 70s. Southwest Winds 5 to 10 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

Tonight 11 Aug Washington

Mostly cloudy. Showers and Thunderstorms likely this Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Patchy fog after midnight. Lows in the mid 60s. West Winds 5 to 10 Mph. Chance of rain 70 percent.

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Monongahela Temperature Statistics

August Temperature

Pittsburgh - Allegheny County Airport (9.9 miles)

  • Lowest 4 August, 2026

    60.1 °F

  • Average August

    73.9 °F

  • Highest 4 August, 2026

    86 °F

Climate (2021–2026)

Pittsburgh - Allegheny County Airport (9.9 miles)

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    63.3 °F
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