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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

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Thunderstorm

70°F

21°C

Humidity 88%
Wind Speed SE 13 mph
Barometer 29.89 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 16 May 7:50 am CDT
Extended Forecast for

2 Miles W Glen Carbon IL

  • Today

    Today: Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms, mainly between noon and 3pm. High near 82. Southwest wind 8 to 11 mph. Chance of precipitation is 80%.

    High: 82 °F

    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Southeast wind around 8 mph.

    Low: 66 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 89. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 89 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 70. South wind 14 to 17 mph, with gusts as high as 24 mph.

    Low: 70 °F

    Increasing
    Clouds

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 88. Breezy, with a south wind 15 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    High: 88 °F

    Breezy.
    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 86. Chance of precipitation is 80%.

    High: 86 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 73.

    High: 73 °F

    Chance
    Showers

Detailed Forecast

Today
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms, mainly between noon and 3pm. High near 82. Southwest wind 8 to 11 mph. Chance of precipitation is 80%.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Southeast wind around 8 mph.
Sunday
Sunny, with a high near 89. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph.
Sunday Night
Increasing clouds, with a low around 70. South wind 14 to 17 mph, with gusts as high as 24 mph.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 88. Breezy, with a south wind 15 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71.
Tuesday
Showers and possibly a thunderstorm. High near 86. Chance of precipitation is 80%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Wednesday
A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 73.
Wednesday Night
Mostly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 73.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 54.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Glen Carbon IL
 38.77°N 90°W (Elev. 551 ft)
Last Update:
7:40 am CDT May 16, 2026
Forecast Valid:
8am CDT May 16, 2026-6pm CDT May 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation