Mount Vernon Weather Forecast

    • 70
    • 82

    Slight Chance Thunderstorms

    • 74
    • 89

    Chance Thunderstorms

    • 74
    • 93

    Slight Chance Thunderstorms

    • 75
    • 93

    Partly Sunny

    • 71
    • 94

    Chance Thunderstorms

    • 70
    • 90

    Chance Thunderstorms

    • 69
    • 89

    Slight Chance Thunderstorms

Today 29 Aug Linn

Partly sunny with a 50 percent chance of Showers. Highs in the lower 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 29 Aug Linn

Partly cloudy with a slight chance of Thunderstorms. A chance of Showers, mainly this evening. Lows around 70. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

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Mount Vernon Temperature Statistics

August Temperature

Cedar Rapids Airport (15.5 miles)

  • Lowest 24 August, 2026

    53.1 °F

  • Average August

    71.6 °F

  • Highest 10 August, 2026

    87.1 °F

Climate (2021–2026)

Cedar Rapids Airport (15.5 miles)

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  • Average Low 2021–2026

    40.6 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    61.4 °F
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