Mount Vernon Weather Forecast

    • 24
    • 40

    Decreasing Clouds

    • 32
    • 50

    Partly Sunny

    • 49
    • 62

    Slight Chance Rain Showers

    • 35
    • 71

    Rain

    • 23
    • 44

    Partly Sunny

    • 27
    • 47

    Mostly Sunny

Today 23 Mar Knox

Mostly cloudy. A slight chance of rain and snow Showers this afternoon. Much cooler with Highs in the upper 30s. Northwest Winds around 15 Mph with Gusts up to 25 Mph. Chance of precipitation 20 percent.

Tonight 23 Mar Knox

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 20s. North Winds 10 to 15 Mph, becoming northeast around 5 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Vernon Temperature Statistics

March Temperature

Knox County Airfield (4.3 miles)

  • Lowest 18 March, 2026

    15.8 °F

  • Average March

    47.3 °F

  • Highest 15 March, 2026

    73.4 °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

    43.3 °F

  • Average 2021–2026

    52.2 °F

  • Average High 2021–2026

    61.6 °F
Get WillyWeather+ to remove ads