Roy Williams Airport Weather Forecast

    • 56
    • 77

    Mostly Sunny

    • 57
    • 79

    Mostly Sunny

    • 56
    • 77

    Partly Sunny

    • 55
    • 75

    Mostly Cloudy

    • 53
    • 74

    Mostly Cloudy

    • 51
    • 70

    Chance Rain

Today 18 Dec Morongo Basin

Sunny. Highs 72 to 75. Northwest Winds up to 10 Mph.

Tonight 18 Dec Morongo Basin

Mostly clear. Lows 50 to 53 in Twentynine Palms and around yucca valley. Around 56 near Joshua tree. West Winds up to 5 Mph.

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Roy Williams Airport Temperature Statistics

December Temperature

Twentynine Palms SELF Airport (11.2 miles)

  • Lowest 2 December, 2025

    39 °F

  • Average December

    55.6 °F

  • Highest 10 December, 2025

    77 °F

Climate (2020–Present)

Twentynine Palms SELF Airport (11.2 miles)

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  • Average Low 2020–2025

    57.8 °F

  • Average 2020–2025

    69.9 °F

  • Average High 2020–2025

    82.1 °F
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