Koosharem Reservoir Weather Forecast

    • 36
    • 60

    Mostly Cloudy

    • 33
    • 53

    Slight Chance Rain

    • 36
    • 57

    Mostly Cloudy

    • 34
    • 58

    Mostly Cloudy

    • 37
    • 57

    Mostly Cloudy

    • 33
    • 52

    Rain/Snow Likely

    • 32
    • 49

    Rain/Snow Likely

Today 19 Dec Upper Sevier River Valleys

Partly cloudy in the morning then becoming partly sunny. Breezy. Highs around 60. Southeast Winds 10 to 20 Mph shifting to the south 15 to 25 Mph in the afternoon.

Tonight 19 Dec Upper Sevier River Valleys

Partly cloudy. Lows in the mid 30s. Southeast Winds 10 to 20 Mph.

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Koosharem Reservoir Temperature Statistics

December Temperature

Bryce Canyon Airport (64 miles)

  • Lowest 4 December, 2025

    7 °F

  • Average December

    30.2 °F

  • Highest 11 December, 2025

    60.1 °F

Climate (2020–Present)

Bryce Canyon Airport (64 miles)

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  • Average Low 2020–2025

    28.4 °F

  • Average 2020–2025

    44.3 °F

  • Average High 2020–2025

    58.3 °F
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