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August 11, 2026: Derecho produces widespread wind damage and tornadoes across northern Illinois and northwest Indiana

Hazardous Weather Conditions

Current conditions at

Pontiac Municipal Airport (KPNT)

Lat: 40.92°NLon: 88.62°WElev: 650ft.

Mostly Cloudy

72°F

22°C

Humidity	100%
Wind Speed	S 5 mph
Barometer	30.08 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	15 Aug 4:55 am CDT

More Information:

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

Extended Forecast for

3 Miles ENE Saunemin IL

Flood Watch August 15, 05:09am until August 15, 10:00am

Click here for hazard details and duration

Flood Watch

Flood Watch August 15, 05:09am until August 15, 10:00am
NOW until 10:00am Sat
Flood Watch
Overnight
Low: 72 °F
Heavy Rain
Saturday
High: 84 °F
Heavy Rain
then Chance
Showers
Saturday Night
Low: 73 °F
Slight Chance
Showers then
Chance
T-storms
Sunday
High: 85 °F
Chance
T-storms
Sunday Night
Low: 66 °F
Partly Cloudy
Monday
High: 82 °F
Mostly Sunny
Monday Night
Low: 62 °F
Mostly Clear
Tuesday
High: 83 °F
Mostly Sunny

Detailed Forecast

Overnight

Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 72. Southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday

Showers and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and 1pm, then a slight chance of showers after 1pm. Some of the storms could produce heavy rainfall. High near 84. South southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Saturday Night

A 40 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 73. South southwest wind around 5 mph.

Sunday

A chance of showers and thunderstorms before 9am, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 85. West northwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.

Sunday Night

Partly cloudy, with a low around 66. Northwest wind 5 to 10 mph.

Monday

Mostly sunny, with a high near 82.

Monday Night

Mostly clear, with a low around 62.

Tuesday

Mostly sunny, with a high near 83.

Tuesday Night

A chance of showers after 1am. Mostly cloudy, with a low around 68.

Wednesday

A chance of showers and thunderstorms. Mostly cloudy, with a high near 82.