Mount Vernon Weather Forecast

    • 55
    • 76

    Mostly Cloudy

    • 61
    • 83

    Mostly Cloudy

    • 59
    • 81

    Slight Chance Rain Showers

    • 53
    • 78

    Mostly Sunny

    • 53
    • 75

    Partly Sunny

    • 54
    • 74

    Partly Sunny

Today 25 May Knox

Mostly cloudy in the Morning, then becoming partly cloudy. Patchy fog in the morning. Highs in the mid 70s. North Winds around 5 Mph.

Tonight 25 May Knox

Mostly cloudy. Areas of fog. Lows in the upper 50s. West Winds around 5 Mph.

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Mount Vernon Temperature Statistics

May Temperature

Knox County Airfield (4.3 miles)

  • Lowest 2 May, 2026

    32 °F

  • Average May

    56.3 °F

  • Highest 18 May, 2026

    86 °F

Climate (2021–Present)

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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