Heavy Rain From the Central Plains to the Mid-Atlantic; Heat Wave Begins This Weekend

Strong to severe thunderstorms and heavy rain will impact portions of the central Plains into the Upper Midwest and the Mid-Atlantic through the weekend. A stretch of unusually hot and humid weather is expected across portions of the central U.S. and the Southeast beginning this weekend and continuing through next week. The heat may reach dangerous levels, particularly mid to late next week. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

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

3 Miles SW Vergennes IL

Tonight
Low: 77 °F
Scattered
T-storms
Saturday
High: 90 °F
Scattered
T-storms
Saturday Night
Low: 77 °F
Isolated
T-storms then
Isolated
Showers
Sunday
High: 94 °F
Mostly Sunny
then Slight
Chance
T-storms
Sunday Night
Low: 76 °F
Slight Chance
T-storms
Monday
High: 94 °F
Sunny then
Slight Chance
T-storms
Monday Night
Low: 76 °F
Mostly Clear
Tuesday
High: 95 °F
Sunny
Tuesday Night
Low: 77 °F
Mostly Clear

Detailed Forecast

Tonight

Scattered showers and thunderstorms, mainly before 4am. Mostly cloudy, with a steady temperature around 77. Light south wind. Chance of precipitation is 30%.

Saturday

Scattered showers and thunderstorms, mainly after 7am. Mostly sunny, with a high near 90. Southwest wind 5 to 9 mph. Chance of precipitation is 40%.

Saturday Night

Isolated showers and thunderstorms before 10pm, then isolated showers between 10pm and 1am. Mostly clear, with a low around 77. South southwest wind 6 to 8 mph. Chance of precipitation is 20%.

Sunday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 106. Southwest wind around 7 mph.

Sunday Night

A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 76. South southwest wind 3 to 6 mph.

Monday

A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. South southwest wind 3 to 6 mph.

Monday Night

Mostly clear, with a low around 76. South wind 3 to 6 mph.

Tuesday

Sunny, with a high near 95. South wind 3 to 6 mph.

Tuesday Night

Mostly clear, with a low around 77. South wind 3 to 6 mph.

Wednesday

Sunny, with a high near 96. South wind around 6 mph.