Grinnell Lake Weather Forecast

    • 30
    • 36

    Breezy

    • 41
    • 48

    Windy

    • 38
    • 49

    Windy

    • 42
    • 53

    Breezy

    • 41
    • 51

    Chance Rain Showers

    • 36
    • 47

    Chance Rain Showers

    • 28
    • 43

    Slight Chance Snow Showers

Today 20 Dec Shirley Basin

Sunny, cooler with Highs in the upper 30s. Temperature falling into the lower 30s late. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 20 Dec Shirley Basin

Partly cloudy in the Evening, then becoming mostly cloudy. Cold. Near steady temperature in the upper 20s. West Winds 15 to 20 Mph with Gusts up to 30 Mph, becoming southwest 5 to 10 Mph with Gusts up to 20 Mph after midnight.

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Grinnell Lake Temperature Statistics

December Temperature

Elk Mountain AWOS (34.8 miles)

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  • Average December

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Climate (2020–Present)

Elk Mountain AWOS (34.8 miles)

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  • Average Low 2020–2025

    34.4 °F

  • Average 2020–2025

    45 °F

  • Average High 2020–2025

    55.4 °F
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