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

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

A Few Clouds

76°F

24°C

Humidity	94%
Wind Speed	Calm
Barometer	30.08 in
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	76°F (24°C)
Last update	18 Jul 10:56 pm CDT

More Information:

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

Extended Forecast for

9 Miles WSW Johnsonville IL

Tonight
Low: 74 °F
Heavy Rain
Saturday
High: 90 °F
Scattered
T-storms and
Patchy Fog
Saturday Night
Low: 76 °F
Scattered
T-storms then
Scattered
Showers
Sunday
High: 93 °F
Chance
T-storms
Sunday Night
Low: 74 °F
Chance
T-storms
Monday
High: 92 °F
Chance
T-storms
Monday Night
Low: 74 °F
Slight Chance
T-storms
Tuesday
High: 93 °F
Mostly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 75 °F
Mostly Clear

Detailed Forecast

Tonight

Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 74. Calm wind. Chance of precipitation is 40%.

Saturday

Scattered showers and thunderstorms. Patchy fog before 7am. Otherwise, partly sunny, with a high near 90. Light south southwest wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 50%.

Saturday Night

Scattered showers and thunderstorms before 4am, then a slight chance of showers. Partly cloudy, with a low around 76. South southwest wind 5 to 7 mph. Chance of precipitation is 30%.

Sunday

A slight chance of showers, then a chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 93. West wind 3 to 6 mph. Chance of precipitation is 30%.

Sunday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Calm wind.

Monday

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming southwest around 5 mph in the afternoon.

Monday Night

A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. Light southeast wind.

Tuesday

A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming south southeast around 5 mph in the morning.

Tuesday Night

Mostly clear, with a low around 75. Light south southeast wind.

Wednesday

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

Wednesday Night

Mostly clear, with a low around 76. Light south wind.

Thursday

Sunny, with a high near 96. Southwest wind 3 to 6 mph.

Thursday Night

Mostly clear, with a low around 74. Light south southwest wind.

Friday

A slight chance of showers and thunderstorms. Sunny, with a high near 95. Southwest wind 3 to 6 mph.