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 Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Partly Cloudy
75°F
24°C
| Humidity | 78% |
| Wind Speed | Vrbl 6 mph |
| Barometer | 30.04 in |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Last update | 19 May 3:45 pm CDT |
Extended Forecast for
West Alton MO
This Afternoon
High: 77 °F
Chance
T-stormsTonight
Low: 54 °F
Chance
T-stormsWednesday
High: 64 °F
Mostly Cloudy
Wednesday Night
Low: 50 °F
Mostly Cloudy
Thursday
High: 72 °F
Partly Sunny
Thursday Night
Low: 55 °F
Chance
Showers then
Showers
LikelyFriday
High: 72 °F
Showers
Friday Night
Low: 57 °F
Slight Chance
T-stormsSaturday
High: 80 °F
Partly Sunny
then Slight
Chance
T-storms
Detailed Forecast
This Afternoon
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Northwest wind around 10 mph.
Tonight
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 54. North wind 8 to 11 mph. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 64. North wind around 10 mph.
Wednesday Night
Mostly cloudy, with a low around 50. Northeast wind 6 to 8 mph.
Thursday
Partly sunny, with a high near 72. East wind 7 to 11 mph.
Thursday Night
Showers likely, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Friday
Showers and possibly a thunderstorm. High near 72. Chance of precipitation is 80%.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 57.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Memorial Day
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
West Alton MO
38.86°N 90.22°W (Elev. 427 ft)
38.86°N 90.22°W (Elev. 427 ft)
2:25 pm CDT May 19, 2026
3pm CDT May 19, 2026-6pm CDT May 26, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
