Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Light Snow
25°F
-4°C
| Humidity | 58% |
| Wind Speed | NW 20 G 31 mph |
| Barometer | 30.15 in (1021.6 mb) |
| Dewpoint | 12°F (-11°C) |
| Visibility | 10.00 mi |
| Wind Chill | 11°F (-12°C) |
| Last update | 16 Mar 8:53 pm CDT |
Extended Forecast for
Granite City IL
Tonight

Low: 16 °F
Scattered
FlurriesTuesday

High: 35 °F
Increasing
CloudsTuesday Night
Low: 32 °F
Chance Snow
then Chance
Rain/SnowWednesday

High: 65 °F
Decreasing
CloudsWednesday Night

Low: 43 °F
Mostly Cloudy
Thursday

High: 74 °F
Mostly Sunny
Thursday Night

Low: 47 °F
Partly Cloudy
Friday

High: 78 °F
Mostly Sunny
Friday Night

Low: 53 °F
Partly Cloudy
Detailed Forecast
Tonight
Scattered flurries before 10pm. Cloudy early, then gradual clearing, with a low around 16. Northwest wind 13 to 15 mph, with gusts as high as 29 mph.
Tuesday
Increasing clouds, with a high near 35. Northwest wind 6 to 9 mph becoming southwest in the afternoon.
Tuesday Night
A chance of snow before 4am, then a slight chance of rain. Cloudy, with a low around 32. Southeast wind 7 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 65. South wind around 10 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 43. West wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Sunny, with a high near 73.
Sunday Night
Mostly cloudy, with a low around 41.
Monday
Mostly sunny, with a high near 56.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Granite City IL
38.73°N 90.11°W (Elev. 417 ft)
38.73°N 90.11°W (Elev. 417 ft)
8:56 pm CDT Mar 16, 2026
9pm CDT Mar 16, 2026-6pm CDT Mar 23, 2026


