Mount Vernon Weather Forecast

    • 51
    • 72

    Partly Sunny

    • 53
    • 73

    Partly Sunny

    • 60
    • 77

    Partly Sunny

    • 60
    • 80

    Rain Showers Likely

    • 52
    • 67

    Chance Rain Showers

    • 53
    • 65

    Chance Rain Showers

Today 28 Sep Knox

Partly cloudy. Highs in the lower 70s. North Winds 5 to 10 Mph.

Tonight 28 Sep Knox

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 50s. North Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Mount Vernon Temperature Statistics

September Temperature

Knox County Airfield (4.3 miles)

  • Lowest 25 September, 2026

    44.6 °F

  • Average September

    68.4 °F

  • Highest 2 September, 2026

    91.4 °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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