Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
52°F
11°C
| Humidity | 83% |
| Wind Speed | E 5 mph |
| Barometer | 30.32 in (1026.7 mb) |
| Dewpoint | 47°F (8°C) |
| Visibility | 10.00 mi |
| Wind Chill | 51°F (11°C) |
| Last update | 11 Apr 2:53 am CDT |
Extended Forecast for
Belleville IL
Overnight
Low: 51 °F
Partly Cloudy
Saturday
High: 72 °F
Mostly Sunny
Saturday Night
Low: 60 °F
Partly Cloudy
Sunday
High: 81 °F
Mostly Sunny
then Slight
Chance
Showers and
BreezySunday Night
Low: 67 °F
Chance
Showers then
Chance
T-stormsMonday
High: 84 °F
Chance
ShowersMonday Night
Low: 68 °F
Partly Cloudy
Tuesday
High: 87 °F
Mostly Sunny
then Slight
Chance
T-stormsTuesday Night
Low: 70 °F
Chance
T-storms
Detailed Forecast
Overnight
Partly cloudy, with a low around 51. East wind around 6 mph.
Saturday
Mostly sunny, with a high near 72. Southeast wind 7 to 9 mph.
Saturday Night
Partly cloudy, with a low around 60. Southeast wind around 8 mph.
Sunday
A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 81. Breezy, with a south wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind 11 to 14 mph, with gusts as high as 25 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly between 10am and 1pm. Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms likely. Partly sunny, with a high near 79. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Belleville IL
38.52°N 89.98°W (Elev. 509 ft)
38.52°N 89.98°W (Elev. 509 ft)
1:26 am CDT Apr 11, 2026
3am CDT Apr 11, 2026-6pm CDT Apr 17, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
