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. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

71°F

22°C

Humidity	84%
Wind Speed	N 3 mph
Barometer	29.93 in (1012.9 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Last update	27 May 12:54 am CDT

More Information:

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

Extended Forecast for

2 Miles SSE Portage Des Sioux MO

Overnight
Low: 62 °F
Chance
Showers
Wednesday
High: 83 °F
Chance
Showers then
Chance
T-storms
Wednesday Night
Low: 62 °F
Partly Cloudy
Thursday
High: 85 °F
Partly Sunny
Thursday Night
Low: 64 °F
Mostly Cloudy
Friday
High: 80 °F
Slight Chance
Showers
Friday Night
Low: 61 °F
Mostly Cloudy
then Slight
Chance
Showers
Saturday
High: 83 °F
Slight Chance
Showers
Saturday Night
Low: 61 °F
Partly Cloudy

Detailed Forecast

Overnight

A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 30%.

Wednesday

A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 83. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 30%.

Wednesday Night

Partly cloudy, with a low around 62. Northeast wind around 6 mph becoming calm in the evening.

Thursday

Partly sunny, with a high near 85. East wind 5 to 10 mph.

Thursday Night

Mostly cloudy, with a low around 64. East wind 6 to 9 mph.

Friday

A 20 percent chance of showers. Mostly cloudy, with a high near 80.

Friday Night

A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 61.

Saturday

A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 83.