Hurricane Lowell to Impact Kauai; Heat Continues in the South-Central U.S.

Hurricane Lowell is forecast to pass west of Kauai today. Impacts such as high surf and heavy rain could impact all of the islands. A Hurricane Warning is in effect for Kauai, Niihau and the surrounding coastal waters. Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest this week with limited nighttime relief. Read More >

Hazardous Weather Conditions

Air Quality Alert

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

73°F

23°C

Humidity	62%
Wind Speed	S 5 mph
Barometer	30.12 in (1019.5 mb)
Dewpoint	59°F (15°C)
Visibility	10.00 mi
Last update	8 Sep 8:54 am CDT

More Information:

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

Extended Forecast for

4 Miles NNE Saint Charles MO

Today
High: 95 °F
Mostly Sunny
Tonight
Low: 74 °F
Mostly Clear
Wednesday
High: 97 °F
Chance
Showers then
Chance
T-storms
Wednesday Night
Low: 70 °F
T-storms
Likely then
Heavy Rain
Thursday
High: 81 °F
Showers
Thursday Night
Low: 64 °F
Partly Cloudy
Friday
High: 86 °F
Mostly Sunny
Friday Night
Low: 67 °F
Mostly Clear
then Chance
Showers
Saturday
High: 89 °F
Chance
Showers

Detailed Forecast

Today

Mostly sunny, with a high near 95. South wind 3 to 5 mph.

Tonight

Mostly clear, with a low around 74. Southeast wind 5 to 7 mph.

Wednesday

A chance of showers, with thunderstorms also possible after 1pm. Partly sunny and hot, with a high near 97. Heat index values as high as 103. South wind 7 to 9 mph becoming west in the morning. Chance of precipitation is 30%.

Wednesday Night

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Some of the storms could produce heavy rainfall. Low around 70. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 100%.

Thursday

Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. High near 81. North wind around 6 mph. Chance of precipitation is 80%.

Thursday Night

Partly cloudy, with a low around 64.

Friday

Mostly sunny, with a high near 86.

Friday Night

A 30 percent chance of showers after 1am. Mostly clear, with a low around 67.

Saturday

A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 89. Chance of precipitation is 40%.

Saturday Night

A 30 percent chance of showers. Partly cloudy, with a low around 68.

Sunday

A 20 percent chance of showers. Mostly sunny, with a high near 88.