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

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

66°F

19°C

Humidity	96%
Wind Speed	S 3 mph
Barometer	29.77 in
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Last update	17 Jun 2:15 am CDT

More Information:

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

Extended Forecast for

2 Miles N Johnston City IL

Wind Advisory June 17, 01:00pm until June 17, 08:00pm

Click here for hazard details and duration

Wind Advisory

Overnight
Low: 63 °F
Partly Cloudy
Wednesday
High: 90 °F
Mostly Sunny
then Sunny
and Breezy
Wednesday Night
Low: 73 °F
Chance
T-storms and
Breezy then
Showers
Thursday
High: 86 °F
Chance
Showers then
Mostly Sunny
Thursday Night
Low: 63 °F
Chance
Showers
Juneteenth
High: 85 °F
Mostly Sunny
Friday Night
Low: 63 °F
Mostly Clear
Saturday
High: 88 °F
Mostly Sunny
Saturday Night
Low: 68 °F
Mostly Clear
then Chance
Showers

Detailed Forecast

Overnight

Partly cloudy, with a low around 63. Calm wind.

Wednesday

Sunny, with a high near 90. Breezy, with a south southwest wind 6 to 16 mph increasing to 16 to 26 mph in the afternoon. Winds could gust as high as 41 mph.

Wednesday Night

Showers and thunderstorms before 4am, then a slight chance of showers after 5am. Low around 73. Breezy, with a southwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 80%.

Thursday

A 30 percent chance of showers, mainly before 10am. Mostly sunny, with a high near 86. West southwest wind 6 to 8 mph becoming north northwest in the afternoon.

Thursday Night

A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 63. North northwest wind around 6 mph becoming calm in the evening.

Juneteenth

Mostly sunny, with a high near 85. Calm wind becoming north northwest around 6 mph in the afternoon.

Friday Night

Mostly clear, with a low around 63. Light north wind.

Saturday

Mostly sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.

Saturday Night

A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. South southeast wind 3 to 6 mph.

Sunday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 86. South wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph.

Sunday Night

Showers and possibly a thunderstorm. Mostly cloudy, with a low around 70. Southwest wind 13 to 17 mph, with gusts as high as 23 mph.

Monday

A chance of showers and thunderstorms. Partly sunny, with a high near 83. Southwest wind 11 to 14 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

Monday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. North wind 5 to 10 mph becoming light north northeast after midnight.

Tuesday

Mostly sunny, with a high near 83. Northeast wind around 6 mph.