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
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
54°F
12°C
| Humidity | 75% |
| Wind Speed | NE 7 mph |
| Barometer | 30.18 in (1021.8 mb) |
| Dewpoint | 46°F (8°C) |
| Visibility | 10.00 mi |
| Wind Chill | 52°F (11°C) |
| Last update | 21 May 6:53 am CDT |
Extended Forecast for
Valmeyer IL
Today
High: 72 °F
Mostly Cloudy
Tonight
Low: 57 °F
Cloudy
Friday
High: 71 °F
Showers
LikelyFriday Night
Low: 58 °F
Chance
ShowersSaturday
High: 82 °F
Partly Sunny
then Chance
T-stormsSaturday Night
Low: 61 °F
Chance
T-stormsSunday
High: 81 °F
Showers
LikelySunday Night
Low: 62 °F
Mostly Cloudy
then Slight
Chance
ShowersMemorial Day
High: 82 °F
Chance
Showers then
Chance
T-storms
Detailed Forecast
Today
Mostly cloudy, with a high near 72. Northeast wind around 8 mph.
Tonight
Cloudy, with a low around 57. Northeast wind 5 to 8 mph.
Friday
Showers likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 71. Northeast wind around 7 mph. Chance of precipitation is 70%.
Friday Night
A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 58. Northeast wind around 5 mph becoming light and variable.
Saturday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. Light west wind.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
Sunday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 62.
Memorial Day
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Valmeyer IL
38.31°N 90.3°W (Elev. 397 ft)
38.31°N 90.3°W (Elev. 397 ft)
6:36 am CDT May 21, 2026
7am CDT May 21, 2026-6pm CDT May 27, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
