Belle Vernon Weather Forecast

    • 56
    • 74

    Rain Showers

    • 53
    • 68

    Chance Rain Showers

    • 55
    • 67

    Rain Showers Likely

    • 54
    • 68

    Rain Showers Likely

    • 52
    • 69

    Partly Sunny

    • 51
    • 71

    Partly Sunny

Today 20 Sep Wyandot

Mostly cloudy with a chance of Thunderstorms. Showers, mainly in the morning. Humid with Highs in the mid 70s. Southwest Winds 5 to 10 Mph, becoming north 10 to 15 Mph in the afternoon. Chance of rain 90 percent.

Tonight 20 Sep Wyandot

Mostly cloudy with a chance of Showers. A chance of Thunderstorms, mainly in the evening. Cooler. Less humid with Lows in the mid 50s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

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Belle Vernon Temperature Statistics

September Temperature

Marion, Marion Municipal Airport (22.4 miles)

  • Lowest 14 September, 2026

    50 °F

  • Average September

    72.8 °F

  • Highest 3 September, 2026

    93.9 °F

Climate (2021–2026)

Marion, Marion Municipal Airport (22.4 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    53.3 °F

  • Average High 2021–2026

    63 °F
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