Heavy Rainfall and Flooding in the Mid-Atlantic; Heat and Wildfire Concerns in the West

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region through tonight. Meanwhile, excessive heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue for the West with dry and breezy conditions. Watching the tropics across the Southeast. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

73°F

23°C

Humidity	96%
Wind Speed	Calm
Barometer	30.05 in
Dewpoint	72°F (22°C)
Visibility	7.00 mi
Last update	15 Jul 3:15 am CDT

More Information:

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

Extended Forecast for

3 Miles W Vienna IL

Overnight
Low: 72 °F
Chance
Showers and
Areas Fog
Tuesday
High: 89 °F
Chance
Showers and
Patchy Fog
then T-storms
Likely
Tuesday Night
Low: 73 °F
T-storms
Likely
Wednesday
High: 91 °F
Chance
T-storms
Wednesday Night
Low: 73 °F
Partly Cloudy
then Slight
Chance
T-storms
Thursday
High: 93 °F
Chance
T-storms
Thursday Night
Low: 74 °F
Chance
T-storms
Friday
High: 90 °F
Chance
T-storms
Friday Night
Low: 74 °F
Chance
T-storms

Detailed Forecast

Overnight

A 30 percent chance of showers and thunderstorms after 4am. Areas of fog. Otherwise, mostly cloudy, with a low around 72. Calm wind.

Tuesday

Showers and thunderstorms likely, mainly after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 60%.

Tuesday Night

Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 73. Calm wind. Chance of precipitation is 60%.

Wednesday

A slight chance of thunderstorms before 7am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.

Wednesday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. Light south southwest wind.

Thursday

A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 93. Calm wind becoming southwest around 6 mph in the morning. Chance of precipitation is 40%.

Thursday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Light and variable wind.

Friday

A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90. Light and variable wind.

Friday Night

A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 74. Calm wind.

Saturday

A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Calm wind becoming south southwest around 6 mph in the morning.

Saturday Night

Partly cloudy, with a low around 75. Light south southwest wind.

Sunday

A chance of showers and thunderstorms. Mostly sunny, with a high near 91. South southwest wind 3 to 6 mph.

Sunday Night

A slight chance of showers and thunderstorms. Mostly clear, with a low around 74. Light south southwest wind.

Monday

A chance of showers and thunderstorms. Mostly sunny, with a high near 92. South southwest wind 3 to 6 mph.