Monessen Weather Forecast

    • 65
    • 80

    Rain Showers Likely

    • 69
    • 84

    Rain Showers Likely

    • 70
    • 84

    Rain Showers

    • 60
    • 82

    Chance Thunderstorms

    • 60
    • 81

    Mostly Sunny

    • 65
    • 83

    Chance Rain Showers

Today 14 Aug Westmoreland

Mostly cloudy. Patchy fog in the morning. A slight chance of Showers in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the lower 80s. East Winds around 5 Mph, becoming southwest in the afternoon. Chance of rain 50 percent.

Tonight 14 Aug Westmoreland

Partly cloudy. Patchy fog after midnight. Humid with Lows in the lower 60s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Monessen Temperature Statistics

August Temperature

Pittsburgh - Allegheny County Airport (14.3 miles)

  • Lowest 4 August, 2026

    60.1 °F

  • Average August

    73.3 °F

  • Highest 4 August, 2026

    86 °F

Climate (2021–2026)

Pittsburgh - Allegheny County Airport (14.3 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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