Hazardous Weather Conditions
Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Fair
82°F
28°C
| Humidity | 30% |
| Wind Speed | S 6 mph |
| Barometer | 29.84 in |
| Dewpoint | 48°F (9°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 21 Mar 1:45 pm CDT |
Extended Forecast for
Maryville IL
This Afternoon

High: 87 °F
Sunny
Tonight

Low: 64 °F
Mostly Clear
Sunday

High: 89 °F
Increasing
CloudsSunday Night
Low: 38 °F
Mostly Cloudy
and Breezy
then Mostly
ClearMonday

High: 57 °F
Mostly Sunny
Monday Night

Low: 41 °F
Mostly Cloudy
Tuesday

High: 63 °F
Mostly Sunny
Tuesday Night

Low: 46 °F
Mostly Cloudy
Wednesday

High: 72 °F
Partly Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 87. Light and variable wind becoming south around 6 mph.
Tonight
Mostly clear, with a low around 64. South wind 7 to 9 mph, with gusts as high as 22 mph.
Sunday
Increasing clouds, with a high near 89. Southwest wind 8 to 16 mph becoming north in the afternoon. Winds could gust as high as 24 mph.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 38. Breezy, with a north wind 11 to 21 mph, with gusts as high as 34 mph.
Monday
Mostly sunny, with a high near 57. Northeast wind 8 to 10 mph.
Monday Night
Mostly cloudy, with a low around 41.
Tuesday
Mostly sunny, with a high near 63.
Tuesday Night
Mostly cloudy, with a low around 46.
Wednesday
Partly sunny, with a high near 72.
Wednesday Night
A slight chance of rain and thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 20%.
Thursday
A 20 percent chance of rain and thunderstorms. Sunny, with a high near 83.
Thursday Night
A 40 percent chance of rain and thunderstorms. Partly cloudy, with a low around 45.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 56.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Maryville IL
38.72°N 89.97°W (Elev. 558 ft)
38.72°N 89.97°W (Elev. 558 ft)
1:26 pm CDT Mar 21, 2026
1pm CDT Mar 21, 2026-6pm CDT Mar 27, 2026



