Gunnison Reservoir Weather Forecast

    • 42
    • 67

    Mostly Cloudy

    • 42
    • 72

    Mostly Sunny

    • 45
    • 75

    Sunny

    • 49
    • 79

    Mostly Sunny

    • 48
    • 79

    Mostly Sunny

    • 49
    • 79

    Mostly Sunny

Today 29 Sep Sanpete Valley

Partly sunny. A chance of rain Showers in the Morning, then a slight chance of Showers and Thunderstorms in the afternoon. Some Thunderstorms may produce heavy rainfall in the afternoon. Highs around 70. Chance of precipitation 40 percent.

Tonight 29 Sep Sanpete Valley

Mostly cloudy. Lows around 40.

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Gunnison Reservoir Temperature Statistics

September Temperature

Delta, Delta Municipal Airport (44.1 miles)

  • Lowest 20 September, 2026

    44.6 °F

  • Average September

    68.9 °F

  • Highest 12 September, 2026

    93.2 °F

Climate (2021–2026)

Delta, Delta Municipal Airport (44.1 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    66.4 °F
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