Nilan Reservoir Weather Forecast

    • 55
    • 79

    Chance Rain Showers

    • 53
    • 66

    Rain Showers Likely

    • 50
    • 72

    Rain Showers Likely

    • 53
    • 77

    Mostly Sunny

    • 58
    • 85

    Mostly Sunny

    • 58
    • 87

    Partly Sunny

Today 20 Jul Southern High Plains

Mostly cloudy. Highs 75 to 80. West Winds up to 10 Mph.

Tonight 20 Jul Southern High Plains

Cooler, cloudy. Slight chance of Thunderstorms in the Evening, then slight chance of rain Showers after midnight. Lows 50 to 55. Northwest Winds up to 10 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Nilan Reservoir Temperature Statistics

July Temperature

Great Falls, Great Falls International Airport (53.4 miles)

  • Lowest 11 July, 2025

    42.7 °F

  • Average July

    70 °F

  • Highest 8 July, 2025

    97.6 °F

Climate (2020–Present)

Great Falls, Great Falls International Airport (53.4 miles)

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  • Average Low 2020–2025

    33.9 °F

  • Average 2020–2025

    46.4 °F

  • Average High 2020–2025

    58.3 °F
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