Mount Vernon Weather Forecast

    • 59
    • 73

    Rain Showers

    • 61
    • 78

    Chance Thunderstorms

    • 58
    • 76

    Chance Rain Showers

    • 61
    • 80

    Chance Rain Showers

    • 60
    • 80

    Chance Rain Showers

Today 23 May Knox

Showers with a slight chance of Thunderstorms in the Morning, then Showers with a chance of Thunderstorms in the afternoon. Highs in the lower 70s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

Tonight 23 May Knox

Mostly cloudy. Showers with a chance of Thunderstorms in the Evening, then a slight chance of Showers and Thunderstorms after midnight. Lows in the upper 50s. Southwest Winds 5 to 10 Mph. Chance of rain 80 percent.

Graph Plots Open in Graphs

  • 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

    56.4 °F

  • Highest 18 May, 2026

    86 °F

Climate (2021–Present)

Knox County Airfield (4.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    43.4 °F

  • Average 2021–2026

    52.3 °F

  • Average High 2021–2026

    61.7 °F
Get WillyWeather+ to remove ads