Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

72°F

22°C

Humidity	95%
Wind Speed	N 3 mph
Barometer	29.94 in
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Last update	20 Aug 4:55 am CDT

More Information:

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

Extended Forecast for

Glen Carbon IL

Today
High: 83 °F
Patchy Fog
then Isolated
Showers
Tonight
Low: 66 °F
Mostly Clear
then Patchy
Fog
Friday
High: 86 °F
Patchy Fog
then Sunny
Friday Night
Low: 69 °F
Mostly Clear
Saturday
High: 85 °F
Sunny
Saturday Night
Low: 65 °F
Mostly Clear
Sunday
High: 82 °F
Mostly Sunny
Sunday Night
Low: 62 °F
Partly Cloudy
Monday
High: 82 °F
Partly Sunny
then Slight
Chance
T-storms

Detailed Forecast

Today

Isolated showers after 2pm. Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 83. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 20%.

Tonight

Patchy fog after 4am. Otherwise, mostly clear, with a low around 66. Northeast wind around 6 mph becoming calm in the evening.

Friday

Patchy fog before 8am. Otherwise, sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon.

Friday Night

Mostly clear, with a low around 69. Light and variable wind.

Saturday

Sunny, with a high near 85. Light northwest wind increasing to 5 to 10 mph in the morning.

Saturday Night

Mostly clear, with a low around 65.

Sunday

Mostly sunny, with a high near 82.