Mount Vernon Weather Forecast

    • 67
    • 84

    Rain Showers

    • 63
    • 84

    Rain Showers Likely

    • 66
    • 84

    Chance Thunderstorms

    • 68
    • 85

    Chance Thunderstorms

    • 65
    • 84

    Rain Showers Likely

    • 63
    • 81

    Rain Showers Likely

Today 7 Aug Knox

Partly sunny in the Morning, then becoming mostly cloudy. Patchy fog in the morning. A chance of Thunderstorms. A chance of Showers in the Morning, then Showers likely in the afternoon. Humid with Highs in the lower 80s. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 7 Aug Knox

Mostly cloudy with a slight chance of Showers and Thunderstorms. Patchy fog. Lows in the upper 60s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

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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

    70.7 °F

  • Highest 4 August, 2026

    84.2 °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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