Rocky Reef Reservoir Weather Forecast

    • 57
    • 93

    Increasing Clouds

    • 55
    • 89

    Mostly Sunny

    • 59
    • 95

    Mostly Sunny

    • 62
    • 100

    Hot

    • 65
    • 98

    Hot

    • 64
    • 95

    Partly Sunny

Today 8 Jul Cascade County below 5000ft

Warmer, sunny. A 20 percent chance of Thunderstorms late in the afternoon. Highs 87 to 93. Southwest Winds 5 to 10 Mph with Gusts to around 25 Mph.

Tonight 8 Jul Cascade County below 5000ft

Partly cloudy. A 20 percent chance of Thunderstorms in the evening. Lows in the upper 50s. Southwest Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening.

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  • Temperature Real-Time

Rocky Reef Reservoir Temperature Statistics

July Temperature

Great Falls, Great Falls International Airport (18.6 miles)

  • Lowest 6 July, 2026

    46 °F

  • Average July

    64.8 °F

  • Highest 4 July, 2026

    86.6 °F

Climate (2021–2026)

Great Falls, Great Falls International Airport (18.6 miles)

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  • Average Low 2021–2026

    34.3 °F

  • Average 2021–2026

    46.9 °F

  • Average High 2021–2026

    59 °F
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