Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

78°F

26°C

Humidity	82%
Wind Speed	N 3 mph
Barometer	29.90 in (1012.1 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	19 Aug 8:51 pm CDT

More Information:

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

Extended Forecast for

Crystal Lake Park MO

Tonight
Low: 71 °F
Chance
T-storms and
Patchy Fog
Thursday
High: 84 °F
Patchy Fog
then Partly
Sunny
Thursday Night
Low: 68 °F
Mostly Clear
then Patchy
Fog
Friday
High: 88 °F
Patchy Fog
then Sunny
Friday Night
Low: 69 °F
Mostly Clear
then Slight
Chance
T-storms
Saturday
High: 86 °F
Sunny
Saturday Night
Low: 67 °F
Mostly Clear
Sunday
High: 84 °F
Mostly Sunny
Sunday Night
Low: 66 °F
Slight Chance
T-storms

Detailed Forecast

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 1am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 71. Calm wind.

Thursday

Patchy fog before 9am. Otherwise, partly sunny, with a high near 84. North wind 3 to 6 mph.

Thursday Night

Patchy fog after 5am. Otherwise, mostly clear, with a low around 68. Northeast wind around 5 mph becoming calm in the evening.

Friday

Patchy fog before 8am. Otherwise, sunny, with a high near 88. Light and variable wind.

Friday Night

A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly clear, with a low around 69. Calm wind. Chance of precipitation is 20%.

Saturday

Sunny, with a high near 86.

Saturday Night

Mostly clear, with a low around 67.

Sunday

Mostly sunny, with a high near 84.

Sunday Night

A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 20%.

Monday

A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 85.

Monday Night

Partly cloudy, with a low around 68.