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
75°F
24°C
| Humidity | 71% |
| Wind Speed | S 8 mph |
| Barometer | 29.88 in (1011.2 mb) |
| Dewpoint | 65°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 18 May 2:53 am CDT |
Extended Forecast for
4 Miles SSE Mascoutah IL
Overnight
Low: 72 °F
Mostly Cloudy
Monday
High: 86 °F
Showers
Monday Night
Low: 70 °F
Chance
T-storms then
Partly CloudyTuesday
High: 86 °F
Showers
Likely then
T-stormsTuesday Night
Low: 59 °F
Showers
Wednesday
High: 70 °F
Slight Chance
ShowersWednesday Night
Low: 52 °F
Mostly Cloudy
Thursday
High: 74 °F
Partly Sunny
Thursday Night
Low: 58 °F
Mostly Cloudy
then Chance
Showers
Detailed Forecast
Overnight
Mostly cloudy, with a low around 72. South wind around 13 mph, with gusts as high as 22 mph.
Monday
Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 86. South wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 70. South wind 11 to 15 mph, with gusts as high as 24 mph.
Tuesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon. High near 86. Southwest wind 11 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 59. Northwest wind 6 to 9 mph. Chance of precipitation is 90%.
Wednesday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 70.
Wednesday Night
Mostly cloudy, with a low around 52.
Thursday
Partly sunny, with a high near 74.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 58.
Friday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
Mostly sunny, with a high near 86.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles SSE Mascoutah IL
38.47°N 89.78°W (Elev. 420 ft)
38.47°N 89.78°W (Elev. 420 ft)
2:01 am CDT May 18, 2026
3am CDT May 18, 2026-6pm CDT May 24, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
