Mount Vernon Weather Forecast

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    • 64

    Increasing Clouds

    • 59
    • 65

    Rain Showers

    • 60
    • 72

    Rain Showers

    • 59
    • 76

    Chance Thunderstorms

    • 59
    • 77

    Chance Rain Showers

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    • 81

    Chance Rain Showers

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    • 81

    Chance Rain Showers

Today 21 May Knox

Partly sunny. Highs in the lower 60s. Northeast Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 21 May Knox

Partly cloudy. Lows in the lower 50s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

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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