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	97%
Wind Speed	N 12 mph
Barometer	30.01 in (1015.9 mb)
Dewpoint	66°F (19°C)
Visibility	6.00 mi
Last update	18 May 12:53 pm CDT

More Information:

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

Extended Forecast for

4 Miles SSW Shiloh IL

Flood Watch May 18, 01:07pm until May 18, 07:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch May 18, 01:07pm until May 18, 07:00pm
NOW until 7:00pm Mon
Flood Watch
This Afternoon
High: 77 °F
T-storms
Tonight
Low: 67 °F
Chance
T-storms then
Partly Cloudy
Tuesday
High: 85 °F
Showers
Likely then
T-storms
Tuesday Night
Low: 58 °F
Showers
Wednesday
High: 70 °F
Chance
Showers
Wednesday Night
Low: 52 °F
Mostly Cloudy
Thursday
High: 73 °F
Partly Sunny
Thursday Night
Low: 57 °F
Mostly Cloudy
then Showers
Likely

Detailed Forecast

This Afternoon

Showers and possibly a thunderstorm. High near 77. South wind 14 to 16 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 14 mph, with gusts as high as 25 mph.

Tuesday

Showers and thunderstorms before 4pm, then showers and possibly a thunderstorm between 4pm and 5pm, then showers and thunderstorms likely after 5pm. High near 85. South wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

Tuesday Night

Showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 58. North wind 6 to 9 mph. Chance of precipitation is 80%.

Wednesday

A 30 percent chance of showers, mainly before 1pm. Partly sunny, 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

Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.

Friday

Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. Chance of precipitation is 70%.

Friday Night

A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 61.