Mount Vernon Weather Forecast

    • 45
    • 71

    Becoming Sunny

    • 37
    • 64

    Mostly Sunny

    • 42
    • 65

    Sunny

    • 46
    • 73

    Mostly Sunny

    • 46
    • 71

    Mostly Sunny

    • 45
    • 72

    Mostly Sunny

Today 4 Oct Knox

Partly cloudy this Morning, then becoming mostly sunny. Patchy fog this morning. Highs around 70. Light and variable Winds, becoming west 5 to 10 Mph this afternoon.

Tonight 4 Oct Knox

Mostly clear. Lows in the mid 40s. Northwest Winds 5 to 10 Mph.

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Mount Vernon Temperature Statistics

October Temperature

Knox County Airfield (4.3 miles)

  • Lowest 2 October, 2026

    51.8 °F

  • Average October

    67.4 °F

  • Highest 1 October, 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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