Mount Vernon Weather Forecast

    • 56
    • 78

    Becoming Sunny

    • 57
    • 80

    Sunny

    • 62
    • 83

    Partly Sunny

    • 63
    • 82

    Chance Thunderstorms

    • 62
    • 80

    Chance Thunderstorms

    • 62
    • 82

    Chance Rain Showers

Today 29 Jul Knox

Mostly sunny. Highs in the upper 70s. North Winds 10 to 15 Mph.

Tonight 29 Jul Knox

Clear. Lows in the mid 50s. North Winds 5 to 10 Mph.

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  • Temperature Real-Time

Mount Vernon Temperature Statistics

July Temperature

Knox County Airfield (4.3 miles)

  • Lowest 23 July, 2026

    50 °F

  • Average July

    74.2 °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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