Severe Weather Threat and Extreme Temperatures Impacting Portions of the Southern U.S

Strong to severe thunderstorms are expected to develop from central Texas into the Ohio Valley and Great Lakes Wednesday. Areas who will see the greatest chances for damaging hail and winds will be from north Texas to the Ozarks. Parts of south Texas and Florida will experience dangerous to extreme heat over the next several days. Dangerous heat stress may continue into early next week. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Fair

65°F

18°C

Humidity	73%
Wind Speed	W 8 mph
Barometer	29.82 in (1008.5 mb)
Dewpoint	56°F (13°C)
Visibility	10.00 mi
Last update	22 May 4:51 am CDT

More Information:

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

Extended Forecast for

Saint Charles MO

Today
High: 77 °F
Sunny then
Chance
Showers
Tonight
Low: 60 °F
Chance
T-storms
Thursday
High: 81 °F
Slight Chance
T-storms then
Chance
Showers
Thursday Night
Low: 67 °F
Chance
Showers then
Chance
T-storms
Friday
High: 85 °F
Showers
Likely
Friday Night
Low: 60 °F
Chance
T-storms
Saturday
High: 80 °F
Sunny
Saturday Night
Low: 64 °F
Chance
T-storms then
Showers
Likely
Sunday
High: 82 °F
Showers
Likely

Detailed Forecast

Today

A 40 percent chance of showers and thunderstorms, mainly between 1pm and 5pm. Increasing clouds, with a high near 77. West wind 6 to 8 mph.

Tonight

A 40 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 60. Northwest wind around 5 mph becoming calm in the evening.

Thursday

A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 81. Light and variable wind becoming southeast 5 to 7 mph in the morning.

Thursday Night

A chance of showers, with thunderstorms also possible after 4am. Partly cloudy, with a low around 67. Southeast wind around 6 mph. Chance of precipitation is 40%.

Friday

Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. South wind 7 to 9 mph. Chance of precipitation is 70%.

Friday Night

A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 60.

Saturday

Sunny, with a high near 80.

Saturday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 64. Chance of precipitation is 60%.

Sunday

Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Chance of precipitation is 70%.

Sunday Night

A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.

Memorial Day

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 77.

Monday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58.

Tuesday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 75.