Altona Weather Forecast

    • 20
    • 51

    Snow Likely

    • 25
    • 40

    Chance Snow

    • 25
    • 50

    Mostly Sunny

    • 22
    • 49

    Mostly Sunny

    • 24
    • 51

    Partly Sunny

    • 19
    • 43

    Chance Snow

    • 18
    • 40

    Slight Chance Snow

Today 18 Jan Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly sunny. Highs near 50.

Tonight 18 Jan Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly cloudy with a 50 percent chance of snow. Lows 19 to 23.

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Altona Temperature Statistics

January Temperature

Vance Brand Airport (6.2 miles)

  • Lowest 10 January, 2026

    9.1 °F

  • Average January

    39.7 °F

  • Highest 4 January, 2026

    69.1 °F

Climate (2021–Present)

Vance Brand Airport (6.2 miles)

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    68.4 °F
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