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

Hazardous Weather Outlook

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

75°F

24°C

Humidity	43%
Wind Speed	S 9 G 18 mph
Barometer	29.88 in (1011.2 mb)
Dewpoint	51°F (11°C)
Visibility	10.00 mi
Last update	15 May 10:54 am CDT

More Information:

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

Extended Forecast for

O'Fallon MO

Today
High: 84 °F
Mostly Sunny
Tonight
Low: 65 °F
Mostly Cloudy
then Chance
Showers
Saturday
High: 84 °F
Showers
Likely then
Chance
T-storms
Saturday Night
Low: 64 °F
Mostly Clear
Sunday
High: 91 °F
Sunny
Sunday Night
Low: 70 °F
Mostly Clear
Monday
High: 90 °F
Slight Chance
T-storms then
Chance
T-storms
Monday Night
Low: 69 °F
Chance
T-storms
Tuesday
High: 87 °F
Chance
T-storms then
Showers
Likely

Detailed Forecast

Today

Mostly sunny, with a high near 84. South wind 9 to 11 mph, with gusts as high as 20 mph.

Tonight

A slight chance of showers, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 65. South wind 7 to 9 mph. Chance of precipitation is 30%.

Saturday

Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, then becoming sunny during the afternoon, with a high near 84. South wind 6 to 8 mph. Chance of precipitation is 60%.

Saturday Night

Mostly clear, with a low around 64. South wind 6 to 8 mph.

Sunday

Sunny, with a high near 91. South wind 9 to 14 mph, with gusts as high as 25 mph.

Sunday Night

Mostly clear, with a low around 70.

Monday

A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90.

Monday Night

A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.

Tuesday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 70%.

Tuesday Night

Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

Wednesday

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 75.

Wednesday Night

A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55.

Thursday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 75.