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

Hazardous Weather Conditions

Current conditions at

Clinton Municipal Airport (KCWI)

Lat: 41.83°NLon: 90.33°WElev: 696ft.

Fog/Mist

64°F

18°C

Humidity 87%
Wind Speed E 12 mph
Barometer 30.05 in (1017.4 mb)
Dewpoint 60°F (16°C)
Visibility 6.00 mi
Last update 14 Jun 8:56 am CDT
Extended Forecast for

Lanark IL

  • Today

    Today: Patchy fog before 10am. Otherwise, cloudy early, then gradual clearing, with a high near 79. East wind 5 to 10 mph.

    High: 79 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. East wind around 5 mph.

    Low: 60 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Southeast wind around 5 mph.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. Southeast wind around 5 mph.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Partly Cloudy
    then Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 50%.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 1pm. High near 83. Chance of precipitation is 80%.

    High: 83 °F

    Showers

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, cloudy early, then gradual clearing, with a high near 79. East wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 60. East wind around 5 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Southeast wind around 5 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. Southeast wind around 5 mph.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.
Wednesday
Showers, with thunderstorms also possible after 1pm. High near 83. Chance of precipitation is 80%.
Wednesday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 64.
Juneteenth
Sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lanark IL
 42.11°N 89.83°W (Elev. 883 ft)
Last Update:
8:16 am CDT Jun 14, 2025
Forecast Valid:
9am CDT Jun 14, 2025-6pm CDT Jun 20, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation