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.

A Few Clouds

57°F

14°C

Humidity 100%
Wind Speed Calm
Barometer 30.14 in (1020.4 mb)
Dewpoint 57°F (14°C)
Visibility 7.00 mi
Last update 23 Jun 1:52 am CDT
Extended Forecast for

Clear Lake IL

  • Overnight

    Overnight: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Light north northeast wind.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59. Light and variable wind.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 81. South southeast wind 5 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 16 mph.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 63. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Calm wind becoming south around 5 mph in the afternoon.

    High: 82 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. North northeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 64 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 55. Calm wind.
Tuesday
Sunny, with a high near 79. Light north northeast wind.
Tuesday Night
Partly cloudy, with a low around 59. Light and variable wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 81. South southeast wind 5 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 16 mph.
Wednesday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 63. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. North northeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Saturday
Partly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 70.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 94.
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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:
1:55 am CDT Jun 23, 2026
Forecast Valid:
2am CDT Jun 23, 2026-6pm CDT Jun 29, 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