Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Overcast

77°F

25°C

Humidity	79%
Wind Speed	E 9 mph
Barometer	30.06 in (1016.4 mb)
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	6 Sep 10:51 am CDT

More Information:

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

Extended Forecast for

Clayton MO

Today
High: 91 °F
Mostly Sunny
Tonight
Low: 67 °F
Mostly Clear
Labor Day
High: 89 °F
Sunny
Monday Night
Low: 67 °F
Mostly Clear
Tuesday
High: 96 °F
Sunny
Tuesday Night
Low: 76 °F
Mostly Clear
Wednesday
High: 99 °F
Hot
Wednesday Night
Low: 73 °F
Chance
T-storms then
Showers
Likely
Thursday
High: 85 °F
Chance
Showers

Detailed Forecast

Today

Mostly sunny, with a high near 91. Northeast wind 5 to 8 mph.

Tonight

Mostly clear, with a low around 67. East wind 5 to 8 mph.

Labor Day

Sunny, with a high near 89. East wind 5 to 7 mph.

Monday Night

Mostly clear, with a low around 67. East wind around 6 mph becoming calm after midnight.

Tuesday

Sunny, with a high near 96. Calm wind becoming south around 6 mph in the morning.

Tuesday Night

Mostly clear, with a low around 76.

Wednesday

Mostly sunny and hot, with a high near 99.

Wednesday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

Thursday

A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 85.

Thursday Night

A 20 percent chance of showers after 1am. Partly cloudy, with a low around 67.

Friday

A 20 percent chance of showers. Sunny, with a high near 87.

Friday Night

A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 67.

Saturday

A 20 percent chance of showers. Sunny, with a high near 91.