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.

Fair

91°F

33°C

Humidity 62%
Wind Speed SW 8 mph
Barometer 29.96 in
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 1 Sep 12:55 pm CDT
Extended Forecast for

Thomson IL

Heat Advisory September 1, 01:06pm until September 3, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 1, 01:06pm until September 3, 07:00pm

    NOW until 7:00pm Thu

    Heat Advisory

  • This Afternoon

    High: 91 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 73. South wind around 5 mph.

    Low: 73 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, sunny, with a high near 93. Heat index values as high as 103. Southwest wind 5 to 10 mph.

    High: 93 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73. South wind around 5 mph.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 91. Heat index values as high as 100. Southwest wind around 5 mph.
Tonight
Patchy fog after 4am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 73. South wind around 5 mph.
Wednesday
Patchy fog before 9am. Otherwise, sunny, with a high near 93. Heat index values as high as 103. Southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 73. South wind around 5 mph.
Thursday
Mostly sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 73.
Friday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 72.
Saturday
Mostly sunny, with a high near 91.
Saturday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 70.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 66.
Labor Day
Partly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Thomson IL
 41.94°N 90.11°W (Elev. 604 ft)
Last Update:
12:51 pm CDT Sep 1, 2026
Forecast Valid:
1pm CDT Sep 1, 2026-6pm CDT Sep 7, 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