Mack Weather Forecast

    • 27
    • 53

    Becoming Sunny

    • 29
    • 53

    Partly Sunny

    • 28
    • 53

    Partly Sunny

    • 31
    • 50

    Mostly Cloudy

    • 34
    • 55

    Mostly Cloudy

    • 32
    • 54

    Mostly Cloudy

Today 15 Dec Grand Valley

Mostly sunny. Highs 45 to 55.

Tonight 15 Dec Grand Valley

Mostly cloudy. Lows in the 20s.

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Mack Temperature Statistics

December Temperature

Grand Junction Regional Airport (18 miles)

  • Lowest 4 December, 2025

    21 °F

  • Average December

    34.4 °F

  • Highest 11 December, 2025

    53.1 °F

Climate (2020–Present)

Grand Junction Regional Airport (18 miles)

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  • Average Low 2020–2025

    43.3 °F

  • Average 2020–2025

    55.6 °F

  • Average High 2020–2025

    68.4 °F
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