Spring Meadow Lake State Park Weather Forecast

    • 54
    • 74

    Rain Showers

    • 51
    • 77

    Chance Thunderstorms

    • 52
    • 82

    Mostly Sunny

    • 55
    • 89

    Sunny

    • 56
    • 91

    Mostly Sunny

    • 55
    • 90

    Partly Sunny

    • 55
    • 89

    Partly Sunny

Today 21 Jul Helena Valley

Mostly cloudy. Showers likely and chance of Thunderstorms in the afternoon. Highs 75 to 80. North Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon. Chance of precipitation 70 percent.

Tonight 21 Jul Helena Valley

Cooler. Mostly cloudy. Rain Showers likely and chance of Thunderstorms in the Evening, then chance of rain Showers after midnight. Lows 50 to 55. Northwest Winds 10 to 15 Mph shifting to the west after midnight. Chance of precipitation 70 percent.

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Spring Meadow Lake State Park Temperature Statistics

July Temperature

Helena Regional Airport (3.7 miles)

  • Lowest 5 July, 2025

    49.6 °F

  • Average July

    71.9 °F

  • Highest 8 July, 2025

    97.6 °F

Climate (2020–Present)

Helena Regional Airport (3.7 miles)

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  • Average Low 2020–2025

    36.1 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    59.4 °F
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