Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Heat Advisory until September 19, 08:00 PM CDT

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

74°F

23°C

Humidity	91%
Wind Speed	E 5 mph
Barometer	30.19 in (1021.7 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Last update	17 Sep 1:54 am CDT

More Information:

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

Extended Forecast for

2 Miles SSE St. Charles County Smartt Airport MO

Heat Advisory September 17, 02:15am until September 19, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory September 17, 02:15am until September 19, 08:00pm
NOW until 8:00pm Sat
Heat Advisory
Overnight
Low: 75 °F
Mostly Clear
Thursday
High: 98 °F
Sunny then
Chance
T-storms
Thursday Night
Low: 73 °F
Mostly Clear
Friday
High: 96 °F
Sunny then
Slight Chance
T-storms
Friday Night
Low: 74 °F
Mostly Clear
Saturday
High: 97 °F
Hot
Saturday Night
Low: 73 °F
Partly Cloudy
then Slight
Chance
T-storms
Sunday
High: 92 °F
Slight Chance
Showers then
Slight Chance
T-storms

Detailed Forecast

Overnight

Mostly clear, with a low around 75. Light southeast wind.

Thursday

A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Sunny and hot, with a high near 98. Heat index values as high as 105. Calm wind becoming west 5 to 8 mph in the morning.

Thursday Night

Mostly clear, with a low around 73. Southwest wind around 5 mph becoming calm in the evening.

Friday

A slight chance of showers and thunderstorms between 1pm and 2pm. Sunny, with a high near 96. Heat index values as high as 102. Light and variable wind becoming south around 6 mph. Chance of precipitation is 20%.

Friday Night

Mostly clear, with a low around 74. Southeast wind 3 to 6 mph.

Saturday

Mostly sunny and hot, with a high near 97.

Saturday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.

Sunday

A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 92. Chance of precipitation is 20%.

Sunday Night

A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68.

Monday

A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 84. Chance of precipitation is 50%.