Mount Vernon Weather Forecast

    • 41
    • 64

    Rain Showers

    • 43
    • 65

    Partly Sunny

    • 46
    • 70

    Rain Showers

    • 49
    • 75

    Mostly Sunny

    • 54
    • 82

    Partly Sunny

    • 56
    • 83

    Partly Sunny

Today 31 May Kennebec

Partly sunny with isolated Showers this Morning, then mostly cloudy with Showers and scattered Thunderstorms this afternoon. Highs in the mid 60s. Light and variable Winds. Chance of rain 90 percent.

Tonight 31 May Kennebec

Cloudy. Showers likely with isolated Thunderstorms in the Evening, then scattered Showers after midnight. Patchy fog after midnight. Lows in the lower 40s. Light and variable Winds. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Vernon Temperature Statistics

May Temperature

Waterville, Waterville Robert LaFleur Airport (14.9 miles)

  • Lowest 2 May, 2026

    33.1 °F

  • Average May

    55.3 °F

  • Highest 19 May, 2026

    87.1 °F

Climate (2021–Present)

Waterville, Waterville Robert LaFleur Airport (14.9 miles)

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  • Average Low 2021–2026

    38.1 °F

  • Average 2021–2026

    46.8 °F

  • Average High 2021–2026

    55.9 °F
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