Helena Valley Regulating Reservoir Weather Forecast

    • 18
    • 44

    Mostly Sunny

    • 20
    • 47

    Mostly Sunny

    • 25
    • 46

    Mostly Cloudy

    • 25
    • 47

    Mostly Cloudy

    • 26
    • 48

    Slight Chance Rain/Snow

    • 23
    • 48

    Chance Snow

Today 11 Feb Helena Valley

Mostly sunny. Highs in the mid 40s. Southeast Winds up to 5 Mph.

Tonight 11 Feb Helena Valley

Mostly clear. Lows around 19. South Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Helena Valley Regulating Reservoir Temperature Statistics

February Temperature

Helena Regional Airport (5.6 miles)

  • Lowest 6 February, 2026

    23.6 °F

  • Average February

    41.9 °F

  • Highest 7 February, 2026

    61.6 °F

Climate (2021–Present)

Helena Regional Airport (5.6 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    47.9 °F

  • Average High 2021–2026

    59.8 °F
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