Fontenelle Reservoir Weather Forecast

    • 48
    • 79

    Mostly Sunny

    • 46
    • 78

    Mostly Sunny

    • 49
    • 75

    Chance Rain Showers

    • 41
    • 69

    Breezy

    • 43
    • 71

    Partly Sunny

    • 46
    • 74

    Mostly Cloudy

Today 4 Sep Upper Green River Basin

Sunny, breezy with Highs in the mid 70s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 4 Sep Upper Green River Basin

Mostly clear. Lows in the mid 40s. South Winds around 10 Mph.

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  • Temperature Real-Time

Fontenelle Reservoir Temperature Statistics

September Temperature

KEMMERER (29.2 miles)

  • Lowest 1 September, 2026

    50 °F

  • Average September

    59.7 °F

  • Highest 1 September, 2026

    69.8 °F

Climate (2021–2026)

KEMMERER (29.2 miles)

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  • Average Low 2021–2026

    30.7 °F

  • Average 2021–2026

    42.5 °F

  • Average High 2021–2026

    54.2 °F
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