Mount Vernon Weather Forecast

    • 71
    • 86

    Partly Sunny

    • 71
    • 90

    Partly Sunny

    • 72
    • 92

    Mostly Sunny

    • 66
    • 90

    Chance Thunderstorms

    • 63
    • 84

    Chance Thunderstorms

    • 59
    • 82

    Mostly Sunny

Today 31 Aug Knox

Partly sunny. A slight chance of Showers this morning. Highs in the mid 80s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 31 Aug Knox

Mostly cloudy in the Evening, then becoming partly cloudy. Humid with Lows in the lower 70s. Southwest Winds 5 to 10 Mph.

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Mount Vernon Temperature Statistics

August Temperature

Knox County Airfield (4.3 miles)

  • Lowest 24 August, 2026

    50 °F

  • Average August

    70.5 °F

  • Highest 5 August, 2026

    87.8 °F

Climate (2021–2026)

Knox County Airfield (4.3 miles)

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  • Average Low 2021–2026

    43.4 °F

  • Average 2021–2026

    52.2 °F

  • Average High 2021–2026

    61.7 °F
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