Avon Weather Forecast

    • 39
    • 77

    Increasing Clouds

    • 43
    • 83

    Mostly Cloudy

    • 37
    • 73

    Rain Showers Likely

    • 35
    • 71

    Partly Sunny

    • 38
    • 74

    Partly Sunny

    • 40
    • 77

    Partly Sunny

Today 31 Aug Butte/Blackfoot Region

Sunny. Widespread frost and patchy smoke early in the morning. Highs in the 70s.

Tonight 31 Aug Butte/Blackfoot Region

Partly cloudy. Lows in the upper 30s to mid 40s.

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Avon Temperature Statistics

August Temperature

Helena Regional Airport (28.6 miles)

  • Lowest 4 August, 2026

    45.6 °F

  • Average August

    71 °F

  • Highest 1 August, 2026

    103.6 °F

Climate (2021–2026)

Helena Regional Airport (28.6 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    60 °F
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