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

67°F

19°C

Humidity 84%
Wind Speed S 10 mph
Barometer 29.79 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 15 Apr 2:15 pm CDT
Extended Forecast for

6 Miles NNW Lanark IL

Flood Watch April 15, 02:37pm until April 16, 12:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch April 15, 02:37pm until April 16, 12:00am

    NOW until 12:00am Thu

    Flood Watch

  • This Afternoon

    High: 73 °F

    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms, mainly between midnight and 3am. Some of the storms could produce heavy rainfall. Low around 55. South wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Low: 55 °F

    Heavy Rain
    then Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 72. Southwest wind 5 to 10 mph becoming northwest in the morning.

    High: 72 °F

    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. Calm wind becoming southeast around 5 mph after midnight.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 79. Chance of precipitation is 50%.

    High: 79 °F

    Partly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 1am, then showers likely. Some of the storms could produce heavy rainfall. Low around 40. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Low: 40 °F

    Heavy Rain

  • Saturday

    Saturday: A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 51.

    High: 51 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 73. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Tonight
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms, mainly between midnight and 3am. Some of the storms could produce heavy rainfall. Low around 55. South wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Thursday
A 30 percent chance of showers, mainly before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 72. Southwest wind 5 to 10 mph becoming northwest in the morning.
Thursday Night
Mostly clear, with a low around 53. Calm wind becoming southeast around 5 mph after midnight.
Friday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 79. Chance of precipitation is 50%.
Friday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Some of the storms could produce heavy rainfall. Low around 40. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Saturday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 51.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 31.
Monday
Sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Lanark IL
 42.17°N 89.89°W (Elev. 830 ft)
Last Update:
1:26 pm CDT Apr 15, 2026
Forecast Valid:
2pm CDT Apr 15, 2026-6pm CDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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