Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
20°F
-7°C
| Humidity | 48% |
| Wind Speed | NW 9 mph |
| Barometer | 30.31 in (1027.0 mb) |
| Dewpoint | 3°F (-16°C) |
| Visibility | 10.00 mi |
| Wind Chill | 10°F (-12°C) |
| Last update | 17 Mar 9:53 am CDT |
Extended Forecast for
Granite City IL
Today
High: 35 °F
Increasing
CloudsTonight
Low: 31 °F
Chance Snow
then Chance
Rain/SnowWednesday
High: 64 °F
Becoming
SunnyWednesday Night
Low: 43 °F
Mostly Cloudy
Thursday
High: 74 °F
Mostly Sunny
Thursday Night
Low: 48 °F
Mostly Clear
Friday
High: 76 °F
Sunny
Friday Night
Low: 50 °F
Partly Cloudy
Saturday
High: 78 °F
Sunny
Detailed Forecast
Today
Increasing clouds, with a high near 35. Northwest wind around 7 mph becoming south in the afternoon.
Tonight
A chance of snow before 4am, then a chance of rain. Cloudy, with a low around 31. Southeast wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 64. South wind 8 to 10 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 43. Light and variable wind.
Thursday
Mostly sunny, with a high near 74. Light and variable wind becoming southwest 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Partly sunny, with a high near 57.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
6:56 am CDT Mar 17, 2026
10am CDT Mar 17, 2026-6pm CDT Mar 23, 2026
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