Mount Vernon Weather Forecast

    • 65
    • 82

    Mostly Sunny

    • 68
    • 86

    Partly Sunny

    • 64
    • 85

    Rain Showers

    • 46
    • 66

    Slight Chance Rain Showers

    • 50
    • 66

    Mostly Cloudy

    • 58
    • 73

    Chance Rain Showers

    • 61
    • 77

    Chance Rain Showers

Today 17 May Knox

Mostly sunny with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 80s. South Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

Tonight 17 May Knox

Clear. Lows in the mid 60s. South Winds 5 to 10 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

    52.6 °F

  • Highest 4 May, 2026

    71.6 °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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