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June 11, 2026: Tornado Outbreak, Including Multiple Strong Tornadoes Across Northern Illinois and Northwest Indiana
Routine Weekly NOAA Weather Radio Test Postponed Until Thursday, June 18th

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Partly Cloudy

59°F

15°C

Humidity	77%
Wind Speed	SE 7 mph
Barometer	29.61 in
Dewpoint	52°F (11°C)
Visibility	10.00 mi
Last update	17 Jun 5:43 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Tonica IL

Flood Watch June 17, 10:00am until June 17, 09:00pm

Click here for hazard details and duration

Flood Watch

Today
High: 76 °F
Heavy Rain
then Severe
Thunderstorms
and Breezy
Tonight
Low: 59 °F
Severe
Thunderstorms
then Mostly
Clear
Thursday
High: 74 °F
Mostly Sunny
Thursday Night
Low: 56 °F
Clear
Juneteenth
High: 77 °F
Sunny
Friday Night
Low: 59 °F
Slight Chance
Showers
Saturday
High: 81 °F
Mostly Sunny
Saturday Night
Low: 62 °F
Partly Cloudy
then Chance
Showers
Sunday
High: 76 °F
Showers

Detailed Forecast

Today

A chance of showers and thunderstorms before 9am, then showers and possibly a thunderstorm between 9am and 3pm, then showers and thunderstorms after 3pm. Some of the storms could be severe and produce heavy rainfall. High near 76. Breezy, with a south southeast wind 5 to 15 mph increasing to 15 to 25 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.

Tonight

Showers and thunderstorms likely before 8pm, then a slight chance of showers between 8pm and 9pm. Some of the storms could be severe. Mostly cloudy, then gradually becoming clear, with a low around 59. West wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday

Mostly sunny, with a high near 74. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Thursday Night

Clear, with a low around 56. West northwest wind 5 to 10 mph.

Juneteenth

Sunny, with a high near 77. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.

Friday Night

A 20 percent chance of showers before 1am. Mostly clear, with a low around 59.

Saturday

Mostly sunny, with a high near 81.

Saturday Night

A chance of showers after 1am. Mostly cloudy, with a low around 62.