Mount Vernon Weather Forecast

    • 78
    • 97

    Slight Chance Thunderstorms

    • 65
    • 92

    Increasing Clouds

    • 65
    • 87

    Sunny

    • 67
    • 88

    Partly Sunny

    • 69
    • 87

    Rain Showers Likely

    • 68
    • 83

    Chance Rain Showers

    • 67
    • 86

    Chance Rain Showers

Today 27 Jul Jefferson

Sunny, hot. Near steady temperature in the mid 90s. Southwest Winds around 5 Mph. Highest heat index Readings heat index Readings up to 112.

Tonight 27 Jul Jefferson

Partly cloudy with a chance of Showers with a slight chance of Thunderstorms this Evening, then mostly clear after midnight. Lows in the upper 70s. Southwest Winds around 5 Mph. Chance of rain 30 percent.

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Mount Vernon Temperature Statistics

July Temperature

Mount Vernon Airport (2.5 miles)

  • Lowest 24 July, 2026

    57 °F

  • Average July

    78.5 °F

  • Highest 2 July, 2026

    98.1 °F

Climate (2021–2026)

Mount Vernon Airport (2.5 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    69.1 °F
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