Clear Lake Weather Forecast

    • 22
    • 53

    Increasing Clouds

    • 24
    • 52

    Mostly Cloudy

    • 25
    • 40

    Mostly Cloudy

    • 32
    • 55

    Partly Sunny

    • 32
    • 60

    Partly Sunny

    • 31
    • 61

    Partly Sunny

    • 28
    • 57

    Partly Sunny

Today 31 Dec Brown

Sunny. Highs in the lower 50s. West Winds 10 to 15 Mph, becoming northwest 15 to 20 Mph in the afternoon.

Tonight 31 Dec Brown

Partly cloudy in the Evening, then becoming mostly cloudy. Lows around 19. Northeast Winds around 10 Mph, becoming south up to 10 Mph 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

    34.1 °F

  • Highest 22 December, 2025

    77.9 °F

Climate (2020–Present)

Ainsworth Regional Airport (21.7 miles)

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  • Average Low 2020–2025

    37.8 °F

  • Average 2020–2025

    49.5 °F

  • Average High 2020–2025

    61.9 °F
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