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.

Overcast

70°F

21°C

Humidity 68%
Wind Speed NE 7 mph
Barometer 30.25 in (1024.3 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 24 Sep 4:52 pm CDT
Extended Forecast for

Clear Lake IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. East northeast wind 3 to 5 mph.

    Low: 62 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of sprinkles before 10am. Mostly cloudy, with a high near 71. East wind 3 to 5 mph.

    High: 71 °F

    Slight Chance
    Sprinkles

  • Friday Night

    Friday Night: Cloudy, then gradually becoming partly cloudy, with a low around 57. East wind 3 to 5 mph.

    Low: 57 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 70. Light east southeast wind.

    High: 70 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 72. Light east wind.

    High: 72 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. Light east northeast wind.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 62. East northeast wind 3 to 5 mph.
Friday
A slight chance of sprinkles before 10am. Mostly cloudy, with a high near 71. East wind 3 to 5 mph.
Friday Night
Cloudy, then gradually becoming partly cloudy, with a low around 57. East wind 3 to 5 mph.
Saturday
Partly sunny, with a high near 70. Light east southeast wind.
Saturday Night
Mostly cloudy, with a low around 58. Calm wind.
Sunday
Partly sunny, with a high near 72. Light east wind.
Sunday Night
Partly cloudy, with a low around 56. Light east northeast wind.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 78.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 66.
Wednesday
Showers likely. Mostly cloudy, with a high near 75.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 64.
Thursday
A chance of showers. Mostly sunny, with a high near 74.
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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:
2:56 pm CDT Sep 24, 2026
Forecast Valid:
5pm CDT Sep 24, 2026-6pm CDT Oct 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