Heavy Rainfall Threat for Portions of Mid-Atlantic and Northeast; Heat Linger for Southeast and Expands for the West

Moisture and nearby frontal boundary will focus more showers and thunderstorms for portions of the Mid-Atlantic and Northeast today. Rainfall could be locally heavy resulting instances of flash flooding. Meanwhile, the heat lingers for areas of the Southeast and expands across the Western U.S. the next several days. Between these areas, severe thunderstorms possible for the Plains and Midwest. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Mostly Cloudy

86°F

30°C

Humidity	65%
Wind Speed	N 8 mph
Barometer	29.98 in (1015.0 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	93°F (34°C)
Last update	6 Jul 2:56 pm CDT

More Information:

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

Extended Forecast for

Mount Vernon IL

This Afternoon
High: 87 °F
Partly Sunny
Tonight
Low: 69 °F
Partly Cloudy
then Patchy
Fog
Tuesday
High: 87 °F
Slight Chance
T-storms and
Patchy Fog
Tuesday Night
Low: 68 °F
Partly Cloudy
Wednesday
High: 89 °F
Sunny then
Chance
T-storms
Wednesday Night
Low: 71 °F
Mostly Clear
Thursday
High: 94 °F
Sunny then
Chance
T-storms
Thursday Night
Low: 73 °F
Chance
T-storms then
Showers
Likely
Friday
High: 90 °F
Chance
T-storms then
Showers
Likely

Detailed Forecast

This Afternoon

Partly sunny, with a high near 87. North wind 3 to 5 mph.

Tonight

Patchy fog after 1am. Otherwise, partly cloudy, with a low around 69. North wind around 5 mph becoming calm in the evening.

Tuesday

A 20 percent chance of showers and thunderstorms, mainly between 2pm and 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 87. Calm wind becoming north northeast around 5 mph in the afternoon.

Tuesday Night

Partly cloudy, with a low around 68. Light north wind.

Wednesday

A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Calm wind.

Wednesday Night

Mostly clear, with a low around 71. Calm wind.

Thursday

A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Calm wind becoming south southwest 5 to 7 mph in the morning.

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 southwest wind around 6 mph.

Friday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 90. West southwest wind 5 to 8 mph.

Friday Night

Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening.

Saturday

A chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 89. Calm wind becoming southwest around 5 mph in the afternoon.

Saturday Night

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

Sunday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming west northwest around 5 mph in the afternoon.