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

Hazardous Weather Outlook

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fog/Mist

65°F

18°C

Humidity	96%
Wind Speed	E 5 mph
Barometer	29.90 in
Dewpoint	64°F (18°C)
Visibility	5.00 mi
Last update	17 May 2:55 am CDT

More Information:

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

Extended Forecast for

2 Miles WNW Glen Carbon IL

Overnight
Low: 67 °F
Mostly Cloudy
Sunday
High: 88 °F
Partly Sunny
then Sunny
and Breezy
Sunday Night
Low: 71 °F
Partly Cloudy
Monday
High: 87 °F
Showers
Likely and
Breezy
Monday Night
Low: 71 °F
Partly Cloudy
then Slight
Chance
T-storms
Tuesday
High: 86 °F
Showers
Likely then
Showers
Tuesday Night
Low: 58 °F
Showers
Likely
Wednesday
High: 70 °F
Partly Sunny
Wednesday Night
Low: 52 °F
Slight Chance
Showers

Detailed Forecast

Overnight

Mostly cloudy, with a low around 67. Southeast wind around 8 mph.

Sunday

Partly sunny, then gradually becoming sunny, with a high near 88. Breezy, with a south wind 11 to 21 mph, with gusts as high as 29 mph.

Sunday Night

Partly cloudy, with a low around 71. South wind 14 to 17 mph, with gusts as high as 24 mph.

Monday

A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. Breezy, with a south wind 15 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

Monday Night

A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 71. South wind 14 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

Tuesday

Showers and possibly a thunderstorm. High near 86. Chance of precipitation is 100%.

Tuesday Night

Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.

Wednesday

Partly sunny, with a high near 70.

Wednesday Night

A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 52.

Thursday

Partly sunny, with a high near 72.

Thursday Night

A 20 percent chance of showers. Mostly cloudy, with a low around 55.