Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89° N Lon: 90.03° W Elev: 518 ft.

Fair

71°F

22°C

Humidity	94%
Wind Speed	Calm
Barometer	29.96 in
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Last update	18 Aug 10:15 pm CDT

More Information:

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

Detailed forecast for

Macoupin County

Tonight

Partly cloudy this evening, then mostly cloudy with showers and thunderstorms likely after midnight. Lows in the upper 60s. South winds around 5 mph. Chance of rain 70 percent.

Wednesday

Mostly cloudy. Showers and thunderstorms likely, mainly in the morning. Highs in the upper 70s. Southwest winds around 5 mph, becoming southeast in the afternoon. Chance of rain 70 percent.

Wednesday Night

Mostly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 60s. Northeast winds around 5 mph. Chance of rain 20 percent.

Thursday

Mostly sunny. Highs in the lower 80s. Northeast winds around 5 mph.

Thursday Night

Mostly clear. Lows in the lower 60s. East winds around 5 mph in the evening, becoming light and variable.

Friday

Sunny. Highs in the mid 80s.

Friday Night And Saturday

Mostly clear. A slight chance of showers and thunderstorms. Lows in the mid 60s. Highs in the mid 80s. Chance of rain 20 percent.

Saturday Night

Mostly clear. Lows in the lower 60s.

Sunday

Mostly sunny. Highs in the lower 80s.