Cynthia Slough Weather Forecast

    • 16
    • 22

    Increasing Clouds

    • 7
    • 37

    Partly Sunny

    • 15
    • 25

    Partly Sunny

    • 30
    • 37

    Mostly Cloudy

    • 26
    • 42

    Mostly Cloudy

    • 35
    • 44

    Mostly Cloudy

Today 19 Dec Sauk

Much Colder. Partly sunny then becoming sunny in the late morning and early afternoon then becoming mostly cloudy. Highs around 20. West Winds 5 to 15 Mph. Gusts up to 30 Mph in the morning.

Tonight 19 Dec Sauk

Mostly cloudy. Lows around 15. South Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cynthia Slough Temperature Statistics

December Temperature

Lone Rock Tri-County Regional Airport (6.2 miles)

  • Lowest 4 December, 2025

    -9.9 °F

  • Average December

    16.4 °F

  • Highest 16 December, 2025

    37 °F

Climate (2020–Present)

Lone Rock Tri-County Regional Airport (6.2 miles)

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  • Average Low 2020–2025

    38.6 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    60.1 °F
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