Mount Vernon Weather Forecast

    • 31
    • 49

    Becoming Sunny

    • 54
    • 71

    Chance Thunderstorms

    • 49
    • 72

    Chance Rain Showers

    • 55
    • 77

    Partly Sunny

    • 56
    • 80

    Rain Showers Likely

    • 48
    • 71

    Chance Rain Showers

Today 20 Apr Knox

Mostly sunny. Highs in the upper 40s. Northwest Winds 5 to 10 Mph.

Tonight 20 Apr Knox

Clear. Lows around 30. Northeast Winds around 5 Mph, becoming southeast after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Vernon Temperature Statistics

April Temperature

Knox County Airfield (4.3 miles)

  • Lowest 8 April, 2026

    24.8 °F

  • Average April

    57.2 °F

  • Highest 15 April, 2026

    80.6 °F

Climate (2021–Present)

Knox County Airfield (4.3 miles)

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  • Average Low 2021–2026

    43.3 °F

  • Average 2021–2026

    52.2 °F

  • Average High 2021–2026

    61.7 °F
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