Clear Lake Weather Forecast

    • 55
    • 74

    Becoming Sunny

    • 60
    • 79

    Partly Sunny

    • 63
    • 80

    Chance Thunderstorms

    • 61
    • 82

    Chance Rain Showers

    • 65
    • 80

    Chance Thunderstorms

    • 70
    • 84

    Chance Thunderstorms

Today 22 Jun Sangamon

Mostly cloudy. Highs in the mid 70s. Northeast Winds 10 to 15 Mph.

Tonight 22 Jun Sangamon

Partly cloudy in the Evening, then clearing. Lows in the mid 50s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

June Temperature

Springfield - Abraham Lincoln Capital Airport (6.2 miles)

  • Lowest 3 June, 2026

    50.6 °F

  • Average June

    72.7 °F

  • Highest 10 June, 2026

    90.6 °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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