NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment

After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >

Hazardous Weather Conditions

Heat Advisory until June 9, 10:00 PM CDT

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

88°F

31°C

Humidity	61%
Wind Speed	S 7 mph
Barometer	29.93 in (1013.0 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	96°F (36°C)
Last update	9 Jun 1:53 pm CDT

More Information:

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

Extended Forecast for

4 Miles WSW Waterloo IL

Heat Advisory June 9, 02:55pm until June 9, 10:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory June 9, 02:55pm until June 9, 10:00pm
NOW until 10:00pm Tue
Heat Advisory
This Afternoon
High: 91 °F
Chance
T-storms
Tonight
Low: 74 °F
Mostly Clear
Wednesday
High: 93 °F
Sunny
Wednesday Night
Low: 75 °F
Mostly Clear
Thursday
High: 93 °F
Sunny
Thursday Night
Low: 68 °F
Showers
Friday
High: 84 °F
Sunny
Friday Night
Low: 63 °F
Mostly Clear

Detailed Forecast

This Afternoon

A 30 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 91. Heat index values as high as 106. Southwest wind around 7 mph.

Tonight

Mostly clear, with a low around 74. Southwest wind 5 to 7 mph.

Wednesday

Sunny, with a high near 93. Heat index values as high as 102. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 75. South wind 8 to 10 mph.

Thursday

Sunny, with a high near 93. South wind 9 to 14 mph, with gusts as high as 24 mph.

Thursday Night

Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 68. Chance of precipitation is 80%.

Friday

Sunny, with a high near 84.

Friday Night

Mostly clear, with a low around 63.

Saturday

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 85.

Saturday Night

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

Sunday

Showers and thunderstorms likely. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.

Sunday Night

A 30 percent chance of showers. Mostly cloudy, with a low around 63.

Monday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.