NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment

After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Mostly Cloudy

67°F

19°C

Humidity	93%
Wind Speed	S 7 mph
Barometer	30.02 in (1016.6 mb)
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Last update	19 May 3:56 am CDT

More Information:

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

Extended Forecast for

Du Bois IL

Flood Watch May 19, 04:08am until May 19, 01:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch May 19, 04:08am until May 19, 01:00pm
NOW until 1:00pm Tue
Flood Watch
Today
High: 80 °F
Slight Chance
T-storms then
Chance
T-storms
Tonight
Low: 60 °F
Chance
T-storms then
Chance
Showers
Wednesday
High: 70 °F
Slight Chance
Showers then
Mostly Cloudy
Wednesday Night
Low: 54 °F
Mostly Cloudy
then Slight
Chance
Showers
Thursday
High: 72 °F
Slight Chance
Showers
Thursday Night
Low: 58 °F
Slight Chance
Showers then
Showers
Likely
Friday
High: 74 °F
Showers
Friday Night
Low: 60 °F
Chance
Showers

Detailed Forecast

Today

A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 80. Southwest wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.

Tonight

A chance of showers and thunderstorms. Cloudy, with a low around 60. Southwest wind 5 to 9 mph becoming north after midnight. Chance of precipitation is 50%.

Wednesday

A 20 percent chance of showers before 9am. Mostly cloudy, with a high near 70. Northeast wind around 10 mph.

Wednesday Night

A 20 percent chance of showers after 1am. Mostly cloudy during the early evening, then becoming mostly clear, with a low around 54. Northeast wind 7 to 9 mph.

Thursday

A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 72. Northeast wind 8 to 10 mph.

Thursday Night

A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.

Friday

Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 80%.

Friday Night

A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 60.

Saturday

A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79.

Saturday Night

A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.

Sunday

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.

Sunday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.