Northern Pacific Reservoir Weather Forecast

    • 37
    • 55

    Mostly Cloudy

    • 35
    • 59

    Mostly Cloudy

    • 36
    • 58

    Partly Sunny

    • 38
    • 59

    Partly Sunny

    • 36
    • 55

    Partly Sunny

    • 33
    • 54

    Mostly Cloudy

Today 10 Nov Elkhorn and Boulder Mountains

Mostly sunny. Highs 44 to 52. West Winds 10 to 15 Mph with Gusts to around 40 Mph.

Tonight 10 Nov Elkhorn and Boulder Mountains

Partly cloudy. Lows 32 to 38. Southwest Winds 5 to 15 Mph.

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Northern Pacific Reservoir Temperature Statistics

November Temperature

Helena Regional Airport (5 miles)

  • Lowest 5 November, 2026

    23 °F

  • Average November

    41 °F

  • Highest 7 November, 2026

    62.1 °F

Climate (2021–2026)

Helena Regional Airport (5 miles)

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  • Average Low 2021–2026

    36.3 °F

  • Average 2021–2026

    47.9 °F

  • Average High 2021–2026

    59.9 °F
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