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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 Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Thunderstorm Light Rain Fog/Mist

67°F

19°C

Humidity 93%
Wind Speed N 6 mph
Barometer 29.98 in (1015.0 mb)
Dewpoint 65°F (18°C)
Visibility 3.00 mi
Last update 18 May 11:53 am CDT
Extended Forecast for

Crystal City MO

Flood Watch May 18, 12:16pm until May 18, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch May 18, 12:16pm until May 18, 07:00pm

    NOW until 7:00pm Mon

    Flood Watch

  • This Afternoon

    High: 79 °F

    Heavy Rain

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 67. South wind 9 to 11 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers and thunderstorms likely before 4pm, then showers and possibly a thunderstorm between 4pm and 5pm, then showers and thunderstorms likely after 5pm. High near 87. Southwest wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    High: 87 °F

    Showers
    Likely then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 4am, then showers likely after 4am. Low around 55. North wind 3 to 5 mph. Chance of precipitation is 80%.

    Low: 55 °F

    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers. Partly sunny, with a high near 69. North wind around 6 mph.

    High: 69 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 73.

    High: 73 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.

    Low: 56 °F

    Slight Chance
    Showers then
    Showers
    Likely

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 79. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 67. South wind 9 to 11 mph, with gusts as high as 25 mph.
Tuesday
Showers and thunderstorms likely before 4pm, then showers and possibly a thunderstorm between 4pm and 5pm, then showers and thunderstorms likely after 5pm. High near 87. Southwest wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Tuesday Night
Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 4am, then showers likely after 4am. Low around 55. North wind 3 to 5 mph. Chance of precipitation is 80%.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 69. North wind around 6 mph.
Wednesday Night
Mostly cloudy, with a low around 51.
Thursday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 73.
Thursday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.
Friday
Showers and possibly a thunderstorm. High near 76. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Crystal City MO
 38.22°N 90.39°W (Elev. 446 ft)
Last Update:
12:11 pm CDT May 18, 2026
Forecast Valid:
12pm CDT May 18, 2026-6pm CDT May 24, 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