Loon Lake Weather Forecast

    • 13
    • 20

    Increasing Clouds

    • 19
    • 32

    Mostly Cloudy

    • 10
    • 23

    Mostly Cloudy

    • 21
    • 31

    Mostly Cloudy

    • 14
    • 37

    Mostly Cloudy

    • 11
    • 26

    Mostly Cloudy

Today 21 Dec South Cass

Mostly sunny. Not as cool with Highs around 20. South Winds 5 to 10 Mph.

Tonight 21 Dec South Cass

Partly cloudy in the Evening, then mostly cloudy with a slight chance of freezing rain and snow after midnight. Not as cool with Lows around 13. Temperature rising into the lower 20s after midnight. Southeast Winds around 5 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

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Loon Lake Temperature Statistics

December Temperature

Pine River Regional Airport (10.6 miles)

  • Lowest 14 December, 2025

    -27.6 °F

  • Average December

    9.4 °F

  • Highest 16 December, 2025

    50 °F

Climate (2020–Present)

Pine River Regional Airport (10.6 miles)

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  • Average Low 2020–2025

    32.6 °F

  • Average 2020–2025

    43 °F

  • Average High 2020–2025

    52.5 °F
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