Hazardous Weather Conditions
Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Rain
60°F
16°C
| Humidity | 93% |
| Wind Speed | SW 6 mph |
| Barometer | 29.70 in |
| Dewpoint | 58°F (14°C) |
| Visibility | 7.00 mi |
| Last update | 11 Mar 5:15 am CDT |
Extended Forecast for
Bethalto IL
Overnight

Low: 67 °F
Heavy Rain
Wednesday
High: 63 °F⇓
Heavy Rain
then Rain
Likely and
BreezyWednesday Night
Low: 30 °F
Mostly Cloudy
and Blustery
then Mostly
ClearThursday

High: 54 °F
Sunny
Thursday Night
Low: 43 °F
Partly Cloudy
then Partly
Cloudy and
BreezyFriday

High: 60 °F
Partly Sunny
Friday Night

Low: 36 °F
Mostly Cloudy
Saturday

High: 62 °F
Partly Sunny
Saturday Night
Low: 52 °F
Mostly Cloudy
then Slight
Chance
T-storms
Detailed Forecast
Overnight
Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Steady temperature around 67. Southwest wind around 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm before 3pm, then a slight chance of rain between 3pm and 4pm. Some of the storms could produce heavy rainfall. Temperature falling to around 46 by 4pm. Breezy, with a southwest wind 11 to 20 mph becoming northwest in the morning. Winds could gust as high as 30 mph. Chance of precipitation is 90%.
Wednesday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Blustery, with a northwest wind 16 to 21 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.
Thursday
Sunny, with a high near 54. Light west wind becoming southwest 6 to 11 mph in the morning.
Thursday Night
Partly cloudy, with a low around 43. Breezy, with a south wind 11 to 20 mph, with gusts as high as 31 mph.
Friday
Partly sunny, with a high near 60.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 62.
Saturday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 52.
Sunday
Rain likely and possibly a thunderstorm, then rain after 1pm. High near 64. Breezy. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 24. Blustery. Chance of precipitation is 30%.
Monday
Sunny, with a high near 37. Breezy.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 42.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
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)
3:01 am CDT Mar 11, 2026
5am CDT Mar 11, 2026-6pm CDT Mar 17, 2026



