Clear Lake Weather Forecast

    • 72
    • 84

    Mostly Cloudy

    • 74
    • 89

    Partly Sunny

    • 75
    • 93

    Mostly Sunny

    • 73
    • 93

    Chance Thunderstorms

    • 72
    • 88

    Chance Thunderstorms

    • 72
    • 88

    Chance Thunderstorms

    • 72
    • 90

    Slight Chance Thunderstorms

Today 21 Jul Sangamon

Partly sunny with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 80s. East Winds around 5 Mph. Chance of rain 20 percent.

Tonight 21 Jul Sangamon

Mostly cloudy in the Evening, then partly cloudy with isolated Showers and Thunderstorms after midnight. Humid with Lows in the lower 70s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

July Temperature

Springfield - Abraham Lincoln Capital Airport (6.2 miles)

  • Lowest 2 July, 2025

    62.7 °F

  • Average July

    77.6 °F

  • Highest 11 July, 2025

    92.6 °F

Climate (2020–Present)

Springfield - Abraham Lincoln Capital Airport (6.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    44.8 °F

  • Average 2020–2025

    55 °F

  • Average High 2020–2025

    64.9 °F
Get WillyWeather+ to remove ads