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

Hazardous Weather Conditions

Current conditions at

Springfield - Abraham Lincoln Capital Airport (KSPI)

Lat: 39.85°NLon: 89.68°WElev: 587ft.

Overcast

67°F

19°C

Humidity 97%
Wind Speed S 5 mph
Barometer 30.03 in (1016.6 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 25 Jul 8:52 am CDT
Extended Forecast for

Clear Lake IL

Heat Advisory July 26, 12:00pm until July 27, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A chance of showers and thunderstorms before noon, then a slight chance of showers between noon and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 83. South southwest wind 5 to 7 mph. Chance of precipitation is 50%.

    High: 83 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 72. Light south southeast wind.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 93. Heat index values as high as 107. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 93 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 75. South southwest wind 3 to 6 mph.

    Low: 75 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 97. Southwest wind 7 to 13 mph, with gusts as high as 22 mph.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. Southwest wind 6 to 9 mph becoming northwest after midnight. Winds could gust as high as 17 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. North wind 6 to 10 mph, with gusts as high as 16 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms before noon, then a slight chance of showers between noon and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 83. South southwest wind 5 to 7 mph. Chance of precipitation is 50%.
Tonight
Partly cloudy, with a low around 72. Light south southeast wind.
Sunday
Partly sunny, with a high near 93. Heat index values as high as 107. Calm wind becoming south southwest around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 75. South southwest wind 3 to 6 mph.
Monday
Sunny and hot, with a high near 97. Southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 75. Southwest wind 6 to 9 mph becoming northwest after midnight. Winds could gust as high as 17 mph.
Tuesday
Sunny, with a high near 91. North wind 6 to 10 mph, with gusts as high as 16 mph.
Tuesday Night
Partly cloudy, with a low around 67.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 89.
Thursday Night
Partly cloudy, with a low around 69.
Friday
Mostly sunny, with a high near 89.
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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:
9:36 am CDT Jul 25, 2026
Forecast Valid:
9am CDT Jul 25, 2026-6pm CDT Jul 31, 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