Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
43°F
6°C
| Humidity | 37% |
| Wind Speed | S 8 mph |
| Barometer | 29.92 in (1013.6 mb) |
| Dewpoint | 18°F (-8°C) |
| Visibility | 10.00 mi |
| Wind Chill | 38°F (3°C) |
| Last update | 5 Dec 2:53 pm CST |
Extended Forecast for
Granite City IL
Tonight

Low: 28 °F
Mostly Cloudy
Saturday

High: 39 °F
Partly Sunny
Saturday Night
Low: 31 °F
Mostly Cloudy
then Chance
Rain/SnowSunday
High: 39 °F
Chance
Rain/Snow
then Mostly
CloudySunday Night

Low: 14 °F
Mostly Cloudy
Monday

High: 31 °F
Mostly Sunny
Monday Night

Low: 23 °F
Partly Cloudy
Tuesday

High: 46 °F
Mostly Sunny
Tuesday Night

Low: 36 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 28. South wind 5 to 7 mph becoming west after midnight.
Saturday
Partly sunny, with a high near 39. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
A chance of snow between midnight and 3am, then a chance of rain after 3am. Mostly cloudy, with a low around 31. Southeast wind around 6 mph. Chance of precipitation is 40%.
Sunday
A chance of rain, mixing with snow after 9am, then gradually ending. Mostly cloudy, with a high near 39. Southeast wind 6 to 13 mph becoming northwest in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 14. North wind 5 to 10 mph becoming light after midnight.
Monday
Mostly sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 23.
Tuesday
Mostly sunny, with a high near 46.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 47.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Mostly cloudy, with a high near 34.
Thursday Night
Mostly cloudy, with a low around 21.
Friday
Mostly sunny, with a high near 31.
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)
1:56 pm CST Dec 5, 2025
3pm CST Dec 5, 2025-6pm CST Dec 12, 2025


