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Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
33°F
1°C
| Humidity | 35% |
| Wind Speed | S 10 mph |
| Barometer | 30.24 in (1024.6 mb) |
| Dewpoint | 8°F (-13°C) |
| Visibility | 10.00 mi |
| Wind Chill | 25°F (-4°C) |
| Last update | 20 Jan 5:53 pm CST |
Extended Forecast for
Granite City IL
Tonight

Low: 29 °F
Increasing
CloudsWednesday

High: 43 °F
Becoming
SunnyWednesday Night

Low: 24 °F
Mostly Clear
Thursday

High: 38 °F
Partly Sunny
Thursday Night

Low: 10 °F
Mostly Cloudy
Friday

High: 16 °F
Cold
Friday Night
Low: 3 °F
Mostly Cloudy
then Slight
Chance SnowSaturday

High: 15 °F
Chance Snow
Saturday Night

Low: 9 °F
Chance Snow
Detailed Forecast
Tonight
Increasing clouds, with a low around 29. South wind 9 to 13 mph, with gusts as high as 22 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 43. West wind 9 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 24. Southwest wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 22 mph.
Thursday
Partly sunny, with a high near 38. Northwest wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 10. Light north wind increasing to 8 to 13 mph after midnight. Winds could gust as high as 21 mph.
Friday
Mostly cloudy and cold, with a high near 16.
Friday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 3.
Saturday
A 40 percent chance of snow, mainly after noon. Cloudy and cold, with a high near 15.
Saturday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 9.
Sunday
Partly sunny, with a high near 22.
Sunday Night
Partly cloudy, with a low around 7.
Monday
Mostly sunny, with a high near 26.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Mostly sunny, with a high near 37.
Additional Forecasts and Information
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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)
7:01 pm CST Jan 20, 2026
7pm CST Jan 20, 2026-6pm CST Jan 27, 2026


