Strong Storms and Heavy Rainfall Threats; Dangerous Heat for Southern Plains into the Southwest

Thunderstorms, some severe, will impact areas of the Plains into the Midwest today. Rainfall can be locally heavy as well from these storms with isolated instances of flash flooding. Monsoonal flow will enhance rainfall across the Four Corners into the central Rockies today. Meanwhile, summer heat continues for the southern Plains, Southwest into southern California. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

86°F

30°C

Humidity	52%
Wind Speed	SE 6 mph
Barometer	30.02 in
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Heat Index	88°F (31°C)
Last update	25 Aug 4:50 pm CDT

More Information:

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

Extended Forecast for

3 Miles N West Alton MO

Tonight
Low: 69 °F
Mostly Cloudy
Wednesday
High: 91 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 65 °F
Chance
T-storms then
Mostly Clear
Thursday
High: 88 °F
Sunny
Thursday Night
Low: 63 °F
Mostly Clear
Friday
High: 87 °F
Sunny
Friday Night
Low: 62 °F
Mostly Clear
Saturday
High: 89 °F
Sunny
Saturday Night
Low: 68 °F
Partly Cloudy

Detailed Forecast

Tonight

Mostly cloudy, with a low around 69. East wind around 5 mph becoming calm in the evening.

Wednesday

A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 91. Light and variable wind becoming west 5 to 9 mph in the morning.

Wednesday Night

A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, then gradually becoming clear, with a low around 65. West wind around 6 mph becoming calm in the evening.

Thursday

Sunny, with a high near 88. Light northwest wind becoming north 5 to 9 mph in the morning.

Thursday Night

Mostly clear, with a low around 63. North wind 5 to 8 mph becoming calm in the evening.

Friday

Sunny, with a high near 87.

Friday Night

Mostly clear, with a low around 62.

Saturday

Sunny, with a high near 89.

Saturday Night

Partly cloudy, with a low around 68.