Clear Lake Weather Forecast

    • 48
    • 53

    Rain Showers

    • 51
    • 63

    Rain Showers Likely

    • 54
    • 76

    Rain Showers

    • 37
    • 62

    Mostly Sunny

    • 45
    • 63

    Mostly Sunny

    • 58
    • 74

    Chance Rain Showers

    • 43
    • 73

    Rain Showers

Today 4 Mar Sangamon

Cloudy with a chance of Showers and Thunderstorms. Areas of fog. Near steady temperature in the lower 50s. East Winds around 5 Mph. Chance of rain 50 percent.

Tonight 4 Mar Sangamon

Cloudy with a chance of Thunderstorms. A chance of Showers this Evening, then Showers likely after midnight. Patchy fog this evening. Areas of fog after midnight. Near steady temperature in the upper 40s. East Winds around 5 Mph, becoming south after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

March Temperature

Springfield - Abraham Lincoln Capital Airport (6.2 miles)

  • Lowest 1 March, 2026

    21.9 °F

  • Average March

    33.7 °F

  • Highest 1 March, 2026

    41 °F

Climate (2021–Present)

Springfield - Abraham Lincoln Capital Airport (6.2 miles)

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  • Average Low 2021–2026

    44.9 °F

  • Average 2021–2026

    55.3 °F

  • Average High 2021–2026

    65.3 °F
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