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Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
21°F
-6°C
| Humidity | 27% |
| Wind Speed | NW 14 mph |
| Barometer | 30.41 in (1030.4 mb) |
| Dewpoint | -8°F (-22°C) |
| Visibility | 10.00 mi |
| Wind Chill | 8°F (-13°C) |
| Last update | 19 Jan 3:53 pm CST |
Extended Forecast for
Granite City IL
Tonight

Low: 13 °F
Mostly Clear
Tuesday

High: 38 °F
Mostly Sunny
Tuesday Night

Low: 31 °F
Increasing
CloudsWednesday

High: 45 °F
Becoming
SunnyWednesday Night

Low: 24 °F
Mostly Clear
Thursday

High: 38 °F
Mostly Sunny
Thursday Night

Low: 11 °F
Mostly Cloudy
Friday

High: 18 °F
Cold
Friday Night

Low: 1 °F
Slight Chance
Snow
Detailed Forecast
Tonight
Mostly clear, with a low around 13. West wind around 6 mph becoming light and variable in the evening.
Tuesday
Mostly sunny, with a high near 38. Light south wind increasing to 6 to 11 mph in the morning.
Tuesday Night
Increasing clouds, with a low around 31. South wind 10 to 13 mph, with gusts as high as 25 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 45. West wind 7 to 13 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 24. West wind 6 to 8 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 38.
Thursday Night
Mostly cloudy, with a low around 11.
Friday
Mostly cloudy and cold, with a high near 18.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 1.
Saturday
A 30 percent chance of snow, mainly after noon. Mostly cloudy and cold, with a high near 14.
Saturday Night
A 30 percent chance of snow. Partly cloudy, with a low around 5.
Sunday
Mostly sunny, with a high near 23.
Sunday Night
Mostly clear, with a low around 11.
Monday
Sunny, with a high near 34.
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)
3:16 pm CST Jan 19, 2026
6pm CST Jan 19, 2026-6pm CST Jan 26, 2026


