Areas of Severe Thunderstorms, Excessive Rainfall, and Extreme Heat Wednesday

In the Upper Midwest, heavy to excessive rain may bring flash and urban flooding through Wednesday. Scattered severe thunderstorms capable of large hail and damaging wind gusts are possible from the central High Plains into the Upper Midwest Wednesday. Extreme heat is ongoing over the Desert Southwest through Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

72°F

22°C

Humidity	97%
Wind Speed	Calm
Barometer	30.05 in (1017.0 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Last update	7 Jul 11:52 pm CDT

More Information:

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

Extended Forecast for

5 Miles NNW Vergennes IL

Flood Advisory until July 8, 03:00am

Click here for hazard details and duration

Flood Advisory

Flood Advisory until July 8, 03:00am
NOW until 3:00am Wed
Flood Advisory
Overnight
Low: 68 °F
Chance
Showers and
Patchy Fog
Wednesday
High: 88 °F
Chance
T-storms
Wednesday Night
Low: 69 °F
Mostly Clear
Thursday
High: 93 °F
Sunny then
Slight Chance
T-storms
Thursday Night
Low: 73 °F
Chance
T-storms then
Showers
Likely
Friday
High: 91 °F
Showers
Likely
Friday Night
Low: 71 °F
Showers
Likely
Saturday
High: 88 °F
Chance
Showers then
Chance
T-storms

Detailed Forecast

Overnight

A 30 percent chance of showers and thunderstorms, mainly before 1am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 68. Calm wind.

Wednesday

A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 88. Calm wind.

Wednesday Night

Mostly clear, with a low around 69. Calm wind.

Thursday

A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. South southwest wind 3 to 7 mph.

Thursday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 73. South wind around 6 mph. Chance of precipitation is 60%.

Friday

Showers likely and possibly a thunderstorm. Partly sunny, with a high near 91. Southwest wind 6 to 8 mph. Chance of precipitation is 70%.

Friday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%.

Saturday

A chance of showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming west southwest around 5 mph.

Saturday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Light south southwest wind.

Sunday

A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 88. Calm wind becoming north northeast around 6 mph in the morning.

Sunday Night

Partly cloudy, with a low around 69. Northeast wind around 5 mph becoming calm in the evening.

Monday

Sunny, with a high near 89. Calm wind becoming east northeast around 5 mph in the afternoon.

Monday Night

Clear, with a low around 69. Light and variable wind.

Tuesday

Sunny, with a high near 91. Light east northeast wind.