Monument Weather Forecast

    • 47
    • 83

    Mostly Sunny

    • 51
    • 97

    Hot

    • 45
    • 79

    Chance Rain Showers

    • 43
    • 77

    Mostly Sunny

    • 39
    • 74

    Partly Sunny

    • 38
    • 68

    Partly Sunny

Today 11 May John Day Basin

Sunny. Highs in the upper 70s to lower 80s. Light wind.

Tonight 11 May John Day Basin

Partly cloudy. Lows in the mid 40s to lower 50s. North wind 5 to 10 Mph in the Evening, becoming light.

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Monument Temperature Statistics

May Temperature

Grant County Regional Airport (36 miles)

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  • Average May

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Climate (2021–Present)

Grant County Regional Airport (36 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    62.3 °F
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