Clear Lake Weather Forecast

    • 62
    • 82

    Becoming Sunny

    • 67
    • 83

    Rain Showers Likely

    • 63
    • 81

    Chance Thunderstorms

    • 61
    • 81

    Partly Sunny

    • 64
    • 83

    Chance Rain Showers

    • 61
    • 81

    Slight Chance Thunderstorms

    • 60
    • 79

    Partly Sunny

Today 17 Aug Sangamon

Sunny. Near steady temperature around 80. North Winds 5 to 10 Mph.

Tonight 17 Aug Sangamon

Partly cloudy this Evening, then becoming mostly clear. Lows in the lower 60s. North Winds 5 to 10 Mph this Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

August Temperature

Springfield - Abraham Lincoln Capital Airport (6.2 miles)

  • Lowest 3 August, 2026

    60.7 °F

  • Average August

    77.6 °F

  • Highest 11 August, 2026

    92.6 °F

Climate (2021–2026)

Springfield - Abraham Lincoln Capital Airport (6.2 miles)

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  • Average Low 2021–2026

    45 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    65.6 °F
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