Hazardous Weather Conditions
Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Fair
39°F
4°C
| Humidity | 88% |
| Wind Speed | SE 3 mph |
| Barometer | 30.47 in |
| Dewpoint | 36°F (2°C) |
| Visibility | 10.00 mi |
| Last update | 18 Oct 4:35 am CDT |
Extended Forecast for
Piasa IL
Frost Advisory until October 18, 09:00am
NOW until 9:00am Sun
Frost Advisory
Overnight
Low: 34 °F
Areas Frost
Sunday
High: 68 °F
Areas Frost
then SunnySunday Night
Low: 38 °F
Clear
Monday
High: 71 °F
Sunny
Monday Night
Low: 39 °F
Mostly Clear
Tuesday
High: 74 °F
Sunny
Tuesday Night
Low: 42 °F
Mostly Clear
Wednesday
High: 76 °F
Sunny
Detailed Forecast
Overnight
Areas of frost. Otherwise, clear, with a low around 34. Southeast wind around 5 mph.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 68. South wind 5 to 8 mph.
Sunday Night
Clear, with a low around 38. Southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 71. Light southeast wind.
Monday Night
Mostly clear, with a low around 39. Calm wind.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 81.
Thursday Night
Clear, with a low around 46.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 80.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Piasa IL
39.1°N 90.12°W (Elev. 643 ft)
39.1°N 90.12°W (Elev. 643 ft)
3:16 am CDT Oct 18, 2026
4am CDT Oct 18, 2026-6pm CDT Oct 24, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
