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

Heat Advisory until September 18, 08:00 PM CDT

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

88°F

31°C

Humidity	63%
Wind Speed	S 5 mph
Barometer	30.00 in (1015.1 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	97°F (36°C)
Last update	18 Sep 6:54 pm CDT

More Information:

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

Extended Forecast for

3 Miles N Flint Hill MO

Heat Advisory September 18, 07:52pm until September 18, 08:00pm

Click here for hazard details and duration

...

Heat Advisory September 18, 07:52pm until September 18, 08:00pm
NOW until 8:00pm Fri
Heat Advisory
Tonight
Low: 72 °F
Slight Chance
T-storms then
Mostly Clear
Saturday
High: 97 °F
Hot
Saturday Night
Low: 71 °F
Partly Cloudy
Sunday
High: 90 °F
Chance
Showers then
Chance
T-storms
Sunday Night
Low: 64 °F
Chance
T-storms then
Showers
Likely
Monday
High: 77 °F
Showers
Likely
Monday Night
Low: 58 °F
Chance
Showers
Tuesday
High: 70 °F
Mostly Cloudy

Detailed Forecast

Tonight

A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 72. Calm wind.

Saturday

Partly sunny and hot, with a high near 97. Heat index values as high as 100. Calm wind becoming west 5 to 7 mph in the morning.

Saturday Night

Partly cloudy, with a low around 71. Calm wind.

Sunday

A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 90. Light west wind. Chance of precipitation is 40%.

Sunday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Northeast wind 3 to 5 mph. Chance of precipitation is 70%.

Monday

Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.

Monday Night

A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 58.

Tuesday

Mostly cloudy, with a high near 70.

Tuesday Night

Mostly cloudy, with a low around 52.

Wednesday

Mostly sunny, with a high near 73.

Wednesday Night

Partly cloudy, with a low around 53.