Trillium Lake Weather Forecast

    • -1
    • 1

    Cold

    • 8
    • 23

    Mostly Cloudy

    • 8
    • 42

    Partly Sunny

    • 21
    • 33

    Snow Likely

    • -16
    • 27

    Slight Chance Snow

    • 4
    • 19

    Slight Chance Snow

    • -8
    • 20

    Mostly Cloudy

Today 14 Dec North Cass

Mostly cloudy. Highs around 6 above. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Wind chill Values as low as 16 below.

Tonight 14 Dec North Cass

Mostly cloudy. Not as cool with Lows around 1 below. Temperature rising to around 8 above after midnight. South Winds 15 to 20 Mph with Gusts up to 35 Mph, becoming southwest 5 to 10 Mph with Gusts up to 25 Mph after midnight. Wind chill Values as low as 18 below.

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Trillium Lake Temperature Statistics

December Temperature

Longville, Longville Municipal Airport (9.3 miles)

  • Lowest 12 December, 2025

    -14.8 °F

  • Average December

    8.7 °F

  • Highest 5 December, 2025

    23 °F

Climate (2020–Present)

Longville, Longville Municipal Airport (9.3 miles)

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  • Average Low 2020–2025

    31.6 °F

  • Average 2020–2025

    42 °F

  • Average High 2020–2025

    51.6 °F
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