Mount Vernon Weather Forecast

    • 34
    • 54

    Rain Showers

    • 31
    • 50

    Chance Rain/Snow

    • 37
    • 55

    Rain

    • 30
    • 51

    Rain

    • 31
    • 48

    Chance Rain/Snow

    • 35
    • 51

    Chance Rain

Today 28 Mar John Day Basin

Rain Showers likely in the Morning, then rain Showers in the afternoon. Highs in the 50s. Southwest wind 5 to 15 Mph with Gusts to around 25 Mph. Chance of precipitation 90 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 28 Mar John Day Basin

Mostly cloudy. Rain Showers likely in the Evening, then a chance of rain or snow Showers overnight. No snow accumulation. Lows in the lower to mid 30s. West wind 5 to 15 Mph in the Evening, becoming light. Chance of precipitation 70 percent.

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Mount Vernon Temperature Statistics

March Temperature

Grant County Regional Airport (6.8 miles)

  • Lowest 14 March, 2025

    22.1 °F

  • Average March

    40.8 °F

  • Highest 25 March, 2025

    72.3 °F

Climate (2020–Present)

Grant County Regional Airport (6.8 miles)

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  • Average Low 2020–2025

    39.1 °F

  • Average 2020–2025

    50.4 °F

  • Average High 2020–2025

    62.2 °F
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