Mount Vernon Weather Forecast

    • 59
    • 77

    Chance Thunderstorms

    • 59
    • 78

    Mostly Cloudy

    • 63
    • 82

    Rain Showers Likely

    • 62
    • 81

    Rain Showers Likely

    • 55
    • 82

    Chance Rain Showers

    • 50
    • 75

    Partly Sunny

Today 24 May Knox

Mostly cloudy. Patchy fog in the morning. A chance of Showers and Thunderstorms in the afternoon. Highs in the upper 70s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 24 May Knox

Mostly cloudy. Lows in the upper 50s. South 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

    56.4 °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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