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

Hazardous Weather Conditions

Current conditions at

Tri-Township Airport (KSFY)

Lat: 42.05°NLon: 90.11°WElev: 614ft.

Overcast

64°F

18°C

Humidity 73%
Wind Speed Calm
Barometer 29.87 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 14 Jun 4:15 am CDT
Extended Forecast for

Lanark IL

  • Overnight

    Overnight: Scattered showers, mainly before 5am. Mostly cloudy, with a low around 57. North wind around 10 mph. Chance of precipitation is 40%.

    Low: 57 °F

    Scattered
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 70. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 70 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49. Northwest wind 5 to 10 mph becoming light and variable in the evening.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 75. West wind 5 to 10 mph.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely, then showers and possibly a thunderstorm after 1pm. High near 76. Chance of precipitation is 80%.

    High: 76 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am. Mostly cloudy, with a low around 59. Breezy. Chance of precipitation is 70%.

    Low: 59 °F

    Showers
    Likely and
    Breezy

Detailed Forecast

Overnight
Scattered showers, mainly before 5am. Mostly cloudy, with a low around 57. North wind around 10 mph. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 70. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 49. Northwest wind 5 to 10 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 75. West wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Showers likely, then showers and possibly a thunderstorm after 1pm. High near 76. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am. Mostly cloudy, with a low around 59. Breezy. Chance of precipitation is 70%.
Thursday
Partly sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 54.
Juneteenth
Sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 57.
Saturday
Mostly sunny, with a high near 80.
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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:
3:41 am CDT Jun 14, 2026
Forecast Valid:
4am CDT Jun 14, 2026-6pm CDT Jun 20, 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