Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Fair
46°F
8°C
| Humidity | 66% |
| Wind Speed | SW 9 mph |
| Barometer | 30.24 in |
| Dewpoint | 36°F (2°C) |
| Visibility | 10.00 mi |
| Wind Chill | 41°F (5°C) |
| Last update | 19 Apr 7:45 am CDT |
Extended Forecast for
Bethalto IL
Today

High: 66 °F
Sunny
Tonight

Low: 39 °F
Partly Cloudy
Monday

High: 66 °F
Sunny
Monday Night

Low: 49 °F
Mostly Clear
Tuesday

High: 78 °F
Mostly Sunny
Tuesday Night

Low: 56 °F
Mostly Clear
Wednesday

High: 78 °F
Sunny
Wednesday Night

Low: 59 °F
Mostly Clear
Thursday
High: 82 °F
Sunny then
Mostly Sunny
and Breezy
Detailed Forecast
Today
Sunny, with a high near 66. West wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 30 mph.
Tonight
Partly cloudy, with a low around 39. Northeast wind 5 to 10 mph.
Monday
Sunny, with a high near 66. Light and variable wind becoming south 5 to 8 mph in the morning.
Monday Night
Mostly clear, with a low around 49. Southeast wind around 9 mph.
Tuesday
Mostly sunny, with a high near 78. Southwest wind 8 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Mostly sunny, with a high near 82. Breezy.
Thursday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. Chance of precipitation is 70%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 69.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Bethalto IL
38.88°N 90.02°W (Elev. 499 ft)
38.88°N 90.02°W (Elev. 499 ft)
7:36 am CDT Apr 19, 2026
8am CDT Apr 19, 2026-6pm CDT Apr 25, 2026


