Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Fair

76°F

24°C

Humidity	72%
Wind Speed	N 6 mph
Barometer	30.04 in (1016.2 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	17 Aug 8:51 pm CDT

More Information:

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

Extended Forecast for

Champ MO

Tonight
Low: 66 °F
Decreasing
Clouds
Tuesday
High: 89 °F
Increasing
Clouds
Tuesday Night
Low: 71 °F
Mostly Clear
then Chance
T-storms
Wednesday
High: 85 °F
Chance
T-storms
Wednesday Night
Low: 69 °F
T-storms
Likely
Thursday
High: 84 °F
Slight Chance
T-storms
Thursday Night
Low: 66 °F
Mostly Clear
Friday
High: 86 °F
Sunny
Friday Night
Low: 68 °F
Mostly Clear

Detailed Forecast

Tonight

Mostly cloudy, then gradually becoming mostly clear, with a low around 66. Light and variable wind.

Tuesday

Increasing clouds, with a high near 89. Calm wind becoming south around 5 mph in the afternoon.

Tuesday Night

A 40 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 71. Southeast wind around 6 mph becoming southwest after midnight.

Wednesday

A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 85. Southeast wind 5 to 7 mph becoming north in the afternoon.

Wednesday Night

Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 69. North wind 3 to 5 mph. Chance of precipitation is 60%.

Thursday

A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84.

Thursday Night

Mostly clear, with a low around 66.

Friday

Sunny, with a high near 86.

Friday Night

Mostly clear, with a low around 68.

Saturday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.