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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

Morris Muni-James R Washburn Field Airport (KC09)

Lat: 41.43°NLon: 88.42°WElev: 584ft.

N/A

Humidity	NA
Wind Speed	NA
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	* Not a current observation *

More Information:

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

Extended Forecast for

Mazon ILSimilar City Names

Flood Watch August 15, 04:50am until August 15, 10:00am

Click here for hazard details and duration

Flood Watch

Flood Watch August 15, 04:50am until August 15, 10:00am
NOW until 10:00am Sat
Flood Watch
Overnight
Low: 72 °F
Heavy Rain
Saturday
High: 83 °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 then
Partly Sunny
Sunday Night
Low: 66 °F
Partly Cloudy
Monday
High: 82 °F
Mostly Sunny
Monday Night
Low: 63 °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 80%. New rainfall amounts between a quarter and half of an inch possible.

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 83. 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 40 percent chance of showers and thunderstorms, mainly before 8am. Mostly cloudy, with a high near 85. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

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 63.

Tuesday

Mostly sunny, with a high near 83.

Tuesday Night

A chance of showers after 1am. Mostly cloudy, with a low around 69.

Wednesday

A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81.