Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

97°F

36°C

Humidity	39%
Wind Speed	S 6 mph
Barometer	30.07 in
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Heat Index	102°F (39°C)
Last update	18 Sep 2:50 pm CDT

More Information:

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

Extended Forecast for

2 Miles W Edwardsville IL

Heat Advisory September 18, 03:05pm until September 19, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory September 18, 03:05pm until September 19, 08:00pm
NOW until 8:00pm Sat
Heat Advisory
This Afternoon
High: 96 °F
Chance
T-storms
Tonight
Low: 73 °F
Slight Chance
T-storms then
Mostly Clear
Saturday
High: 97 °F
Hot
Saturday Night
Low: 74 °F
Partly Cloudy
Sunday
High: 93 °F
Slight Chance
Showers then
Slight Chance
T-storms
Sunday Night
Low: 67 °F
Showers
Likely
Monday
High: 80 °F
Showers
Likely
Monday Night
Low: 61 °F
Slight Chance
T-storms then
Chance
Showers

Detailed Forecast

This Afternoon

A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 96. Heat index values as high as 104. Calm wind.

Tonight

A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 73. East wind around 6 mph becoming light and variable after midnight.

Saturday

Increasing clouds and hot, with a high near 97. Light and variable wind becoming west 5 to 8 mph in the morning.

Saturday Night

Partly cloudy, with a low around 74. Light and variable wind becoming south around 5 mph after midnight.

Sunday

A slight chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 93. West wind 3 to 7 mph. Chance of precipitation is 20%.

Sunday Night

A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

Monday

A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.

Monday Night

A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.

Tuesday

Mostly cloudy, with a high near 72.

Tuesday Night

Mostly cloudy, with a low around 55.

Wednesday

Mostly sunny, with a high near 75.

Wednesday Night

Partly cloudy, with a low around 55.

Thursday

Mostly sunny, with a high near 76.

Thursday Night

Partly cloudy, with a low around 58.