National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Springfield - Abraham Lincoln Capital Airport (KSPI)

Lat: 39.85°NLon: 89.68°WElev: 587ft.

Fair

64°F

18°C

Humidity 73%
Wind Speed Calm
Barometer 30.04 in (1017.0 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 25 May 11:52 pm CDT
Extended Forecast for

Clear Lake IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 82. Calm wind becoming east around 6 mph in the afternoon.

    High: 82 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. Light east southeast wind.

    Low: 62 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 40%.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61. East northeast wind around 5 mph becoming calm.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 84. East northeast wind 7 to 11 mph, with gusts as high as 17 mph.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. East northeast wind around 8 mph, with gusts as high as 15 mph.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 56. Calm wind.
Tuesday
Mostly cloudy, with a high near 82. Calm wind becoming east around 6 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. Light east southeast wind.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 61. East northeast wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 84. East northeast wind 7 to 11 mph, with gusts as high as 17 mph.
Thursday Night
Partly cloudy, with a low around 60. East northeast wind around 8 mph, with gusts as high as 15 mph.
Friday
Partly sunny, with a high near 78.
Friday Night
Mostly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
Sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clear Lake IL
 39.82°N 89.57°W (Elev. 554 ft)
Last Update:
12:36 am CDT May 26, 2026
Forecast Valid:
12am CDT May 26, 2026-6pm CDT Jun 1, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation