Monongahela Weather Forecast

    • 61
    • 81

    Increasing Clouds

    • 60
    • 81

    Rain Showers

    • 55
    • 76

    Chance Thunderstorms

    • 54
    • 75

    Partly Sunny

    • 57
    • 78

    Partly Sunny

    • 62
    • 81

    Slight Chance Thunderstorms

Today 21 Aug Washington

Patchy fog in the morning. Mostly sunny. Highs in the upper 70s. East Winds around 5 Mph.

Tonight 21 Aug Washington

Mainly clear. Patchy fog after midnight. Lows in the lower 60s. East Winds around 5 Mph.

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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 °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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