Monument Municipal Airport Weather Forecast

    • 33
    • 43

    Rain Likely

    • 32
    • 47

    Partly Sunny

    • 37
    • 45

    Rain Likely

    • 31
    • 48

    Chance Rain

    • 29
    • 48

    Chance Rain/Snow

    • 25
    • 41

    Chance Rain/Snow

    • 28
    • 41

    Mostly Cloudy

Today 21 Dec John Day Basin

Patchy fog in the morning. Rain. Highs in the lower to mid 40s. Light wind. Chance of precipitation near 100 percent. Rainfall Amounts up to a half of an inch possible.

Tonight 21 Dec John Day Basin

Rain likely. Lows in the lower 30s. South wind 5 to 10 Mph. Chance of precipitation 70 percent. Rainfall Amounts less than a tenth of an inch.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Monument Municipal Airport Temperature Statistics

December Temperature

Grant County Regional Airport (37.3 miles)

  • Lowest 1 December, 2025

    18.3 °F

  • Average December

    42 °F

  • Highest 15 December, 2025

    60.4 °F

Climate (2020–Present)

Grant County Regional Airport (37.3 miles)

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  • Average Low 2020–2025

    39.2 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    62.3 °F
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