Mount Vernon Weather Forecast

    • 66
    • 84

    Rain Showers

    • 62
    • 84

    Chance Thunderstorms

    • 64
    • 85

    Partly Sunny

    • 66
    • 87

    Mostly Sunny

    • 69
    • 90

    Sunny

    • 69
    • 91

    Mostly Sunny

    • 67
    • 88

    Slight Chance Thunderstorms

Today 10 Jul Knox

Showers with Thunderstorms likely. Some Thunderstorms may produce heavy rainfall. Highs in the lower 80s. Southwest Winds around 5 Mph. Chance of rain 90 percent.

Tonight 10 Jul Knox

Mostly cloudy. Showers with Thunderstorms likely this evening. Patchy fog after midnight. Lows in the mid 60s. North Winds around 5 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Vernon Temperature Statistics

July Temperature

Knox County Airfield (4.3 miles)

  • Lowest 6 July, 2026

    66.2 °F

  • Average July

    78.5 °F

  • Highest 1 July, 2026

    93.2 °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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