Clear Lake Weather Forecast

    • 32
    • 72

    Increasing Clouds

    • 36
    • 54

    Mostly Cloudy

    • 42
    • 68

    Partly Sunny

    • 31
    • 66

    Mostly Sunny

    • 30
    • 59

    Mostly Cloudy

    • 21
    • 46

    Partly Sunny

Today 22 Dec Brown

Sunny. Highs in the lower 70s. West Winds 10 to 20 Mph. Gusts up to 35 Mph in the afternoon.

Tonight 22 Dec Brown

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 30s. West Winds 10 to 15 Mph, becoming north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

December Temperature

Ainsworth Regional Airport (21.7 miles)

  • Lowest 13 December, 2025

    -3.8 °F

  • Average December

    31.7 °F

  • Highest 16 December, 2025

    66.6 °F

Climate (2020–Present)

Ainsworth Regional Airport (21.7 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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