Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

68°F

20°C

Humidity	84%
Wind Speed	S 5 mph
Barometer	29.75 in (1007.2 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Last update	16 Jun 8:52 pm CDT

More Information:

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

Extended Forecast for

3 Miles NNW Vergennes IL

Tonight
Low: 60 °F
Mostly Clear
Wednesday
High: 89 °F
Sunny and
Windy
Wednesday Night
Low: 71 °F
Showers and
Breezy
Thursday
High: 84 °F
Slight Chance
T-storms then
Chance
Showers
Thursday Night
Low: 61 °F
Chance
Showers
Juneteenth
High: 83 °F
Mostly Sunny
Friday Night
Low: 62 °F
Mostly Clear
Saturday
High: 87 °F
Mostly Sunny
Saturday Night
Low: 67 °F
Partly Cloudy
then Chance
Showers

Detailed Forecast

Tonight

Mostly clear, with a low around 60. Light southwest wind.

Wednesday

Sunny, with a high near 89. Windy, with a south southwest wind 6 to 16 mph increasing to 20 to 30 mph in the afternoon. Winds could gust as high as 40 mph.

Wednesday Night

Showers and possibly a thunderstorm. Low around 71. Breezy, with a south southwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 80%.

Thursday

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 84. West southwest wind around 8 mph becoming north northwest in the afternoon.

Thursday Night

A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 61. North wind around 6 mph becoming calm in the evening.

Juneteenth

Mostly sunny, with a high near 83. Calm wind becoming north northwest around 6 mph in the afternoon.

Friday Night

Mostly clear, with a low around 62. Light and variable wind.

Saturday

Mostly sunny, with a high near 87. Calm wind becoming south around 5 mph in the afternoon.

Saturday Night

A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. South southeast wind 3 to 6 mph.

Sunday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. South southwest wind 6 to 14 mph, with gusts as high as 20 mph.

Sunday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. South wind 10 to 15 mph, with gusts as high as 21 mph.

Monday

A chance of showers and thunderstorms. Partly sunny, with a high near 84. North northeast wind around 10 mph becoming northwest in the morning.

Monday Night

A chance of showers. Partly cloudy, with a low around 65. North northeast wind 3 to 7 mph.

Tuesday

A slight chance of showers. Mostly sunny, with a high near 84. North wind 3 to 6 mph.