Heavy Rainfall and Severe Thunderstorms in the Midwest and Southwest; Heat Continues in the Southern U.S.

Heavy to excessive rainfall could bring flooding today through Thursday across parts of the central Plains into the Midwest and southern Arizona and New Mexico. Scattered strong to severe thunderstorms may impact parts of eastern Nebraska into western Iowa later today into early evening. Heat Advisories remain in place across much of east Texas into the mid-Mississippi Valley today and Tuesday. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from September 15, 11:00 AM CDT until September 15, 07:00 PM CDT

Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

79°F

26°C

Humidity	50%
Wind Speed	E 9 mph
Barometer	30.11 in (1019.0 mb)
Dewpoint	59°F (15°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	14 Sep 12:54 pm CDT

More Information:

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

Extended Forecast for

Byrnes Mill MO

Heat Advisory September 15, 11:00am until September 15, 07:00pm

Click here for hazard details and duration

Heat Advisory

This Afternoon
High: 87 °F
Sunny
Tonight
Low: 71 °F
Mostly Clear
Tuesday
High: 98 °F
Mostly Sunny
then
Scattered
T-storms
Tuesday Night
Low: 71 °F
Scattered
T-storms
Wednesday
High: 95 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 72 °F
Partly Cloudy
Thursday
High: 95 °F
Sunny
Thursday Night
Low: 71 °F
Partly Cloudy
Friday
High: 93 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Sunny, with a high near 87. Southeast wind around 7 mph.

Tonight

Mostly clear, with a low around 71. Southeast wind 5 to 7 mph.

Tuesday

Scattered showers and thunderstorms, mainly after 3pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 106. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.

Tuesday Night

Scattered showers and thunderstorms. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.

Wednesday

A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 95. Light and variable wind. Chance of precipitation is 20%.

Wednesday Night

Partly cloudy, with a low around 72.

Thursday

Sunny, with a high near 95.

Thursday Night

Partly cloudy, with a low around 71.

Friday

Mostly sunny, with a high near 93.

Friday Night

Partly cloudy, with a low around 69.

Saturday

Mostly sunny, with a high near 91.