South Twin Lake Weather Forecast

    • 17
    • 44

    Gradual Clearing

    • 12
    • 37

    Breezy

    • -8
    • 27

    Mostly Cloudy

    • -5
    • 6

    Chance Snow

    • -2
    • 16

    Mostly Cloudy

    • 3
    • 22

    Mostly Sunny

    • 18
    • 39

    Partly Sunny

Today 20 Jan Brown

Partly sunny in the Morning, then becoming cloudy. Highs in the lower 40s. South Winds around 10 Mph, becoming west in the afternoon.

Tonight 20 Jan Brown

Mostly cloudy with a chance of Flurries in the Evening, then partly cloudy after midnight. Lows around 17. Northwest Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Twin Lake Temperature Statistics

January Temperature

Ainsworth Regional Airport (18.6 miles)

  • Lowest 17 January, 2026

    -3.5 °F

  • Average January

    34.7 °F

  • Highest 4 January, 2026

    66.4 °F

Climate (2021–Present)

Ainsworth Regional Airport (18.6 miles)

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  • Average Low 2021–2026

    37.8 °F

  • Average 2021–2026

    49.5 °F

  • Average High 2021–2026

    62 °F
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