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 >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

79°F

26°C

Humidity 74%
Wind Speed S 12 G 21 mph
Barometer 29.92 in (1012.6 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 18 May 8:53 am CDT
Extended Forecast for

Lebanon IL

Flood Watch May 18, 09:56am until May 18, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch May 18, 09:56am until May 18, 07:00pm

    NOW until 7:00pm Mon

    Flood Watch

  • Today

    High: 78 °F

    Showers then
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Mostly cloudy, with a low around 67. South wind 11 to 15 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon.  High near 85. Southwest wind 11 to 16 mph, with gusts as high as 24 mph.  Chance of precipitation is 100%.

    High: 85 °F

    Showers
    Likely then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm.  Low around 58. Northwest wind 7 to 9 mph.  Chance of precipitation is 80%.

    Low: 58 °F

    Showers

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 70. North wind around 10 mph.

    High: 70 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 1am.  Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Showers and possibly a thunderstorm. High near 78. South wind 16 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 90%.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 67. South wind 11 to 15 mph, with gusts as high as 25 mph.
Tuesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon. High near 85. Southwest wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 58. Northwest wind 7 to 9 mph. Chance of precipitation is 80%.
Wednesday
Mostly cloudy, with a high near 70. North wind around 10 mph.
Wednesday Night
Mostly cloudy, with a low around 52.
Thursday
Partly sunny, with a high near 73.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 58.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
Mostly sunny, with a high near 86.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Lebanon IL
 38.63°N 89.81°W (Elev. 449 ft)
9:46 am CDT May 18, 2026
9am CDT May 18, 2026-6pm CDT May 24, 2026
 
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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