Mount Vernon Weather Forecast

    • 71
    • 88

    Smoke

    • 66
    • 87

    Rain Showers

    • 59
    • 82

    Mostly Sunny

    • 67
    • 85

    Chance Thunderstorms

    • 63
    • 85

    Chance Thunderstorms

    • 57
    • 78

    Mostly Sunny

Today 17 Jul Knox

Partly cloudy. Smoke. Highs in the upper 80s. Southeast Winds around 5 Mph, becoming south around 5 Mph in the afternoon.

Tonight 17 Jul Knox

Patchy smoke in the evening. Mostly cloudy with a chance of Showers and Thunderstorms. Humid with Lows around 70. Southwest Winds around 5 Mph. Chance of rain 50 percent.

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Mount Vernon Temperature Statistics

July Temperature

Knox County Airfield (4.3 miles)

  • Lowest 13 July, 2026

    64.4 °F

  • Average July

    77.1 °F

  • Highest 1 July, 2026

    93.2 °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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