Herrin Lakes Weather Forecast

    • 4
    • 19

    Increasing Clouds

    • 6
    • 26

    Mostly Sunny

    • 17
    • 26

    Snow

    • 11
    • 33

    Snow

    • 15
    • 30

    Mostly Cloudy

    • 22
    • 33

    Chance Snow

Today 29 Nov Upper Blackfoot and MacDonald Pass

Mostly sunny. Highs around 17. Southwest Winds up to 5 Mph.

Tonight 29 Nov Upper Blackfoot and MacDonald Pass

Mostly cloudy. Near steady temperature around 9. East Winds up to 5 Mph.

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Herrin Lakes Temperature Statistics

November Temperature

Helena Regional Airport (39.8 miles)

  • Lowest 25 November, 2025

    19.9 °F

  • Average November

    41.7 °F

  • Highest 1 November, 2025

    73 °F

Climate (2020–Present)

Helena Regional Airport (39.8 miles)

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  • Average Low 2020–2025

    36.3 °F

  • Average 2020–2025

    47.7 °F

  • Average High 2020–2025

    59.5 °F
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