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, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Thunderstorm Light Rain Fog/Mist

66°F

19°C

Humidity	90%
Wind Speed	Vrbl 5 mph
Barometer	29.98 in (1014.6 mb)
Dewpoint	63°F (17°C)
Visibility	6.00 mi
Last update	18 May 4:54 pm CDT

More Information:

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

Extended Forecast for

Ballwin MO

Flood Watch May 18, 05:04pm until May 19, 01:00pm

Flood Advisory May 18, 05:04pm until May 18, 07:15pm

Click here for hazard details and duration

Flood Watch

Flood Advisory

Flood Watch May 18, 05:04pm until May 19, 01:00pm
Flood Advisory May 18, 05:04pm until May 18, 07:15pm
NOW: Multiple hazards in effect
Click HERE for Details
This Afternoon
High: 72 °F
Heavy Rain
Tonight
Low: 67 °F
T-storms
Likely then
Chance
T-storms
Tuesday
High: 81 °F
Showers
Likely then
T-storms
Tuesday Night
Low: 56 °F
Showers
Likely
Wednesday
High: 68 °F
Slight Chance
Showers
Wednesday Night
Low: 51 °F
Mostly Cloudy
Thursday
High: 73 °F
Partly Sunny
Thursday Night
Low: 57 °F
Slight Chance
Showers then
Showers
Likely

Detailed Forecast

This Afternoon

Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Steady temperature around 72. South wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

Tonight

Showers and thunderstorms likely before 9pm, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 67. South wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

Tuesday

Showers and thunderstorms likely before 2pm, then showers and possibly a thunderstorm between 2pm and 3pm, then showers and thunderstorms likely after 3pm. High near 81. South wind 8 to 11 mph becoming west in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 80%.

Tuesday Night

Showers and thunderstorms likely before 11pm, then showers likely and possibly a thunderstorm between 11pm and 1am, then showers likely after 1am. Mostly cloudy, with a low around 56. North wind 7 to 9 mph. Chance of precipitation is 70%.

Wednesday

A 20 percent chance of showers. Partly sunny, with a high near 68. North wind 7 to 9 mph.

Wednesday Night

Mostly cloudy, with a low around 51.

Thursday

Partly sunny, 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 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 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.

Saturday

A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.

Saturday Night

A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.

Sunday

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.

Sunday Night

A 20 percent chance of showers. Mostly cloudy, with a low around 64.