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 >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Partly Cloudy

84°F

29°C

Humidity	51%
Wind Speed	S 9 G 20 mph
Barometer	30.04 in (1017.1 mb)
Dewpoint	64°F (18°C)
Visibility	10.00 mi
Heat Index	85°F (29°C)
Last update	4 Jun 3:53 pm CDT

More Information:

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

Extended Forecast for

Herculaneum MO

Tonight
Low: 66 °F
Partly Cloudy
Friday
High: 88 °F
Mostly Sunny
then Slight
Chance
T-storms
Friday Night
Low: 69 °F
Partly Cloudy
Saturday
High: 90 °F
Mostly Sunny
then Slight
Chance
T-storms
Saturday Night
Low: 69 °F
Mostly Cloudy
then Chance
Showers
Sunday
High: 87 °F
Chance
T-storms then
Showers
Likely
Sunday Night
Low: 69 °F
Chance
T-storms then
Showers
Likely
Monday
High: 86 °F
Showers then
T-storms
Monday Night
Low: 69 °F
Chance
T-storms

Detailed Forecast

Tonight

Partly cloudy, with a low around 66. South wind 3 to 8 mph.

Friday

A slight chance of showers and thunderstorms between 3pm and 4pm. Mostly sunny, with a high near 88. Southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Friday Night

Partly cloudy, with a low around 69. South wind 3 to 8 mph.

Saturday

A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 90. Southwest wind 3 to 5 mph.

Saturday Night

A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Light southwest wind. Chance of precipitation is 30%.

Sunday

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

Sunday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

Monday

Showers and possibly a thunderstorm. High near 86. Chance of precipitation is 80%.

Monday Night

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

Tuesday

A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.

Tuesday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.

Wednesday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.

Wednesday Night

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.