Spring Meadow Lake State Park Weather Forecast

    • 57
    • 82

    Slight Chance Thunderstorms

    • 52
    • 82

    Slight Chance Thunderstorms

    • 52
    • 84

    Mostly Sunny

    • 56
    • 90

    Mostly Sunny

    • 57
    • 89

    Partly Sunny

    • 55
    • 88

    Chance Rain Showers

Today 17 Aug Helena Valley

Partly sunny. A 20 percent chance of Thunderstorms late in the afternoon. Highs in the lower 80s. East Winds up to 5 Mph shifting to the northwest in the afternoon.

Tonight 17 Aug Helena Valley

Mostly cloudy. A 20 percent chance of rain Showers after midnight. Lows in the mid 50s. West Winds up to 10 Mph.

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  • Temperature Real-Time

Spring Meadow Lake State Park Temperature Statistics

August Temperature

Helena Regional Airport (3.7 miles)

  • Lowest 4 August, 2026

    45.6 °F

  • Average August

    69.8 °F

  • Highest 1 August, 2026

    103.6 °F

Climate (2021–2026)

Helena Regional Airport (3.7 miles)

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  • Average Low 2021–2026

    36.3 °F

  • Average 2021–2026

    47.9 °F

  • Average High 2021–2026

    59.8 °F
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