Mount Vernon Weather Forecast

    • 68
    • 83

    Rain Showers

    • 58
    • 79

    Partly Sunny

    • 60
    • 78

    Mostly Sunny

    • 58
    • 77

    Rain Showers Likely

    • 54
    • 75

    Partly Sunny

    • 56
    • 76

    Partly Sunny

Today 16 Aug Knox

Showers with a chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall in the morning. Humid with Highs in the lower 80s. Southwest Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

Tonight 16 Aug Knox

Cloudy with a 50 percent chance of Showers. Near steady temperature in the upper 60s. Southwest Winds around 5 Mph.

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Mount Vernon Temperature Statistics

August Temperature

Knox County Airfield (4.3 miles)

  • Lowest 4 August, 2026

    55.4 °F

  • Average August

    71.9 °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

    52.3 °F

  • Average High 2021–2026

    61.7 °F
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