Altona Weather Forecast

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    • 84

    Chance Thunderstorms

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    • 89

    Chance Thunderstorms

    • 60
    • 90

    Thunderstorms Likely

    • 61
    • 90

    Chance Thunderstorms

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    • 92

    Slight Chance Thunderstorms

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    Chance Thunderstorms

Today 17 Jul Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly cloudy. Patchy fog early in the morning. Chance of Thunderstorms in the afternoon. Highs in the mid to upper 80s. Chance of precipitation 40 percent.

Tonight 17 Jul Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County

Mostly cloudy. Slight chance of Thunderstorms in the evening. Lows in the lower to mid 60s. Chance of precipitation 10 percent.

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Altona Temperature Statistics

July Temperature

Vance Brand Airport (6.2 miles)

  • Lowest 2 July, 2025

    54.1 °F

  • Average July

    77 °F

  • Highest 9 July, 2025

    103.6 °F

Climate (2020–Present)

Vance Brand Airport (6.2 miles)

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  • Average Low 2020–2025

    37.7 °F

  • Average 2020–2025

    52.5 °F

  • Average High 2020–2025

    67.8 °F
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