South Twin Lake Weather Forecast

    • 22
    • 41

    Mostly Cloudy

    • 13
    • 44

    Chance Snow

    • 21
    • 33

    Mostly Cloudy

    • 27
    • 50

    Partly Sunny

    • 26
    • 55

    Mostly Cloudy

    • 23
    • 39

    Mostly Cloudy

Today 5 Dec Brown

Breezy. Mostly sunny. Highs in the lower 40s. West Winds 10 to 15 Mph, becoming northwest 15 to 25 Mph in the afternoon.

Tonight 5 Dec Brown

Mostly cloudy. Lows in the lower 20s. Northwest Winds up to 10 Mph, becoming south after midnight.

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South Twin Lake Temperature Statistics

December Temperature

Ainsworth Regional Airport (18.6 miles)

  • Lowest 1 December, 2025

    11.3 °F

  • Average December

    25.9 °F

  • Highest 2 December, 2025

    43.2 °F

Climate (2020–Present)

Ainsworth Regional Airport (18.6 miles)

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  • Average Low 2020–2025

    37.8 °F

  • Average 2020–2025

    49.4 °F

  • Average High 2020–2025

    61.8 °F
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