Ninemile Reservoir Weather Forecast

    • 58
    • 86

    Chance Thunderstorms

    • 56
    • 87

    Mostly Sunny

    • 56
    • 88

    Mostly Sunny

    • 56
    • 89

    Mostly Sunny

    • 55
    • 91

    Mostly Sunny

    • 55
    • 91

    Mostly Sunny

    • 57
    • 92

    Mostly Sunny

Today 21 Jul Sanpete Valley

Partly sunny. A slight chance of rain Showers in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the upper 80s. Chance of precipitation 30 percent.

Tonight 21 Jul Sanpete Valley

Partly cloudy. Isolated Showers and Thunderstorms in the evening. Cooler. Some Thunderstorms may produce strong gusty Winds in the evening. Lows in the lower 50s. Chance of precipitation 20 percent.

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Ninemile Reservoir Temperature Statistics

July Temperature

Delta, Delta Municipal Airport (44.7 miles)

  • Lowest 6 July, 2025

    53.6 °F

  • Average July

    79.5 °F

  • Highest 9 July, 2025

    100.4 °F

Climate (2020–Present)

Delta, Delta Municipal Airport (44.7 miles)

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  • Average Low 2020–2025

    39.5 °F

  • Average 2020–2025

    53.2 °F

  • Average High 2020–2025

    66.5 °F
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