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 Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Thunderstorm Light Rain Fog/Mist

66°F

19°C

Humidity	93%
Wind Speed	Calm
Barometer	30.02 in (1015.5 mb)
Dewpoint	64°F (18°C)
Visibility	6.00 mi
Last update	18 May 2:51 pm CDT

More Information:

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

Extended Forecast for

Bellerive MO

Flood Watch May 18, 03:12pm until May 19, 01:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch May 18, 03:12pm until May 19, 01:00pm
NOW until 1:00pm Tue
Flood Watch
This Afternoon
High: 73 °F
Heavy Rain
Tonight
Low: 68 °F
Showers
Likely then
Chance
T-storms
Tuesday
High: 80 °F
Chance
T-storms then
T-storms
Tuesday Night
Low: 57 °F
T-storms
Likely then
Showers
Likely
Wednesday
High: 69 °F
Slight Chance
Showers
Wednesday Night
Low: 52 °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 73. Southwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.

Tonight

Showers and thunderstorms likely before 9pm, then a chance of thunderstorms after 5am. Mostly cloudy, with a low around 68. South wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

Tuesday

Showers and thunderstorms, mainly before 5pm. High near 80. South wind 10 to 13 mph becoming west in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 80%.

Tuesday Night

Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then showers likely after 1am. Mostly cloudy, with a low around 57. North wind 8 to 10 mph. Chance of precipitation is 70%.

Wednesday

A 20 percent chance of showers. Partly sunny, with a high near 69. North wind 8 to 10 mph.

Wednesday Night

Mostly cloudy, with a low around 52.

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, mainly before 1am. Mostly cloudy, with a low around 61.

Saturday

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

Saturday Night

A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.

Sunday

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.

Sunday Night

A 20 percent chance of showers. Mostly cloudy, with a low around 66.