Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

Tri-Township Airport (KSFY)

Lat: 42.05°NLon: 90.11°WElev: 614ft.

Fair

46°F

8°C

Humidity 87%
Wind Speed N 6 mph
Barometer 30.24 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 20 May 5:15 am CDT
Extended Forecast for

Stockton IL

  • Today

    Today: Sunny, with a high near 63. North wind around 10 mph.

    High: 63 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 41. Northeast wind around 10 mph.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 63. East wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 63 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 46. East wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Mostly Cloudy

  • Friday

    Friday: A 50 percent chance of showers after 1pm.  Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly before 1am.  Mostly cloudy, with a low around 50. Chance of precipitation is 70%.

    Low: 50 °F

    Showers
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 63. North wind around 10 mph.
Tonight
Partly cloudy, with a low around 41. Northeast wind around 10 mph.
Thursday
Partly sunny, with a high near 63. East wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 46. East wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
A 50 percent chance of showers after 1pm. Mostly cloudy, with a high near 64.
Friday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.
Saturday
Partly sunny, with a high near 71.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
Partly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 54.
Memorial Day
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Stockton IL
 42.35°N 90°W (Elev. 1010 ft)
2:21 am CDT May 20, 2026
5am CDT May 20, 2026-6pm CDT May 26, 2026
 
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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