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

67°F

19°C

Humidity	91%
Wind Speed	E 6 mph
Barometer	30.00 in (1014.7 mb)
Dewpoint	64°F (18°C)
Visibility	4.00 mi
Last update	18 May 11:51 am CDT

More Information:

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

Extended Forecast for

Wellston MO

Flood Watch May 18, 12:13pm until May 18, 07:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch May 18, 12:13pm until May 18, 07:00pm
NOW until 7:00pm Mon
Flood Watch
This Afternoon
High: 73 °F
T-storms
Tonight
Low: 67 °F
Showers
Likely then
Chance
T-storms
Tuesday
High: 86 °F
Showers
Likely then
T-storms
Tuesday Night
Low: 57 °F
Showers
Wednesday
High: 70 °F
Mostly Cloudy
Wednesday Night
Low: 53 °F
Mostly Cloudy
Thursday
High: 74 °F
Partly Sunny
Thursday Night
Low: 58 °F
Mostly Cloudy
then Chance
Showers

Detailed Forecast

This Afternoon

Showers and possibly a thunderstorm. Steady temperature around 73. Southwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.

Tonight

Showers and thunderstorms likely, mainly before 4am. Mostly cloudy, with a low around 67. South wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

Tuesday

Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon. High near 86. South wind 9 to 13 mph becoming west in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 100%.

Tuesday Night

Showers and possibly a thunderstorm. Low around 57. Northwest wind 7 to 9 mph. Chance of precipitation is 80%.

Wednesday

Mostly cloudy, with a high near 70. North wind around 9 mph.

Wednesday Night

Mostly cloudy, with a low around 53.

Thursday

Partly sunny, with a high near 74.

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 77. Chance of precipitation is 50%.

Friday Night

A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.

Saturday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.

Saturday Night

Mostly cloudy, with a low around 63.

Sunday

Mostly sunny, with a high near 88.