Clear Lake Weather Forecast

    • 69
    • 88

    Thunderstorms Likely

    • 67
    • 85

    Partly Sunny

    • 69
    • 88

    Chance Thunderstorms

    • 68
    • 86

    Chance Thunderstorms

    • 69
    • 87

    Chance Thunderstorms

    • 70
    • 89

    Chance Thunderstorms

    • 67
    • 85

    Chance Thunderstorms

Today 6 Jul Sangamon

Thunderstorms likely with a chance of Showers. Near steady temperature in the mid 80s. West Winds around 10 Mph. Chance of rain 70 percent.

Tonight 6 Jul Sangamon

Mostly cloudy. Thunderstorms likely with a chance of Showers in the Evening, then a slight chance of Showers and Thunderstorms after midnight. Humid with Lows in the upper 60s. West Winds around 5 Mph, becoming north after midnight. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

July Temperature

Springfield - Abraham Lincoln Capital Airport (6.2 miles)

  • Lowest 2 July, 2025

    62.1 °F

  • Average July

    77.5 °F

  • Highest 3 July, 2025

    90 °F

Climate (2020–Present)

Springfield - Abraham Lincoln Capital Airport (6.2 miles)

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  • Average Low 2020–2025

    44.8 °F

  • Average 2020–2025

    55 °F

  • Average High 2020–2025

    64.9 °F
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