Helena Valley Regulating Reservoir Weather Forecast

    • 37
    • 70

    Becoming Sunny

    • 43
    • 77

    Partly Sunny

    • 46
    • 79

    Mostly Sunny

    • 47
    • 75

    Partly Sunny

    • 42
    • 65

    Chance Rain Showers

    • 44
    • 67

    Slight Chance Rain

Today 10 May Helena Valley

Warmer, sunny. Highs around 70. Southeast Winds up to 10 Mph.

Tonight 10 May Helena Valley

Clear. Lows 35 to 40. Southeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Helena Valley Regulating Reservoir Temperature Statistics

May Temperature

Helena Regional Airport (5.6 miles)

  • Lowest 4 May, 2024

    29.8 °F

  • Average May

    46.3 °F

  • Highest 4 May, 2024

    66.7 °F

Climate (2019–Present)

Helena Regional Airport (5.6 miles)

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  • Average Low 2019–2024

    35.9 °F

  • Average 2019–2024

    46.9 °F

  • Average High 2019–2024

    58.4 °F
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