Los Alamos Reservoir Weather Forecast

    • 30
    • 49

    Increasing Clouds

    • 33
    • 55

    Partly Sunny

    • 31
    • 54

    Partly Sunny

    • 32
    • 51

    Mostly Sunny

    • 31
    • 54

    Mostly Sunny

    • 31
    • 53

    Partly Sunny

Today 18 Dec Jemez Mountains

Windy. Mostly sunny in the Morning, then becoming partly cloudy. Highs in the upper 40s. Northwest Winds 25 to 35 Mph with Gusts up to 50 Mph, becoming west 20 to 25 Mph with Gusts up to 35 Mph in the afternoon.

Tonight 18 Dec Jemez Mountains

Breezy, cold. Partly cloudy in the Evening, then becoming mostly clear. Lows around 30. Northwest Winds 15 to 25 Mph.

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Los Alamos Reservoir Temperature Statistics

December Temperature

Los Alamos Airport (4.3 miles)

  • Lowest 5 December, 2025

    18.5 °F

  • Average December

    37.8 °F

  • Highest 12 December, 2025

    58.5 °F

Climate (2020–Present)

Los Alamos Airport (4.3 miles)

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  • Average Low 2020–2025

    42.7 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    62.2 °F
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