Hazardous Weather Conditions
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
89°F
32°C
| Humidity | 17% |
| Wind Speed | NW 13 mph |
| Barometer | 29.83 in (1009.7 mb) |
| Dewpoint | 39°F (4°C) |
| Visibility | 10.00 mi |
| Heat Index | 85°F (29°C) |
| Last update | 20 Mar 3:53 pm CDT |
Extended Forecast for
Granite City IL
Tonight

Low: 52 °F
Partly Cloudy
Saturday

High: 82 °F
Sunny
Saturday Night

Low: 63 °F
Mostly Clear
Sunday

High: 87 °F
Mostly Sunny
Sunday Night

Low: 41 °F
Partly Cloudy
Monday

High: 58 °F
Sunny
Monday Night

Low: 41 °F
Partly Cloudy
Tuesday

High: 61 °F
Partly Sunny
Tuesday Night
Low: 44 °F
Partly Cloudy
then Slight
Chance
T-storms
Detailed Forecast
Tonight
Partly cloudy, with a low around 52. West wind 5 to 8 mph becoming calm after midnight.
Saturday
Sunny, with a high near 82. Calm wind becoming southwest 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 63. South wind 6 to 8 mph.
Sunday
Mostly sunny, with a high near 87. South wind 8 to 14 mph becoming northwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 41. North wind 11 to 17 mph, with gusts as high as 28 mph.
Monday
Sunny, with a high near 58.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Partly sunny, with a high near 61.
Tuesday Night
A 20 percent chance of rain and thunderstorms after 1am. Partly cloudy, with a low around 44.
Wednesday
Mostly cloudy, with a high near 68.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
A 20 percent chance of rain. Sunny, with a high near 80.
Thursday Night
A 40 percent chance of rain. Partly cloudy, with a low around 42.
Friday
A 30 percent chance of rain. Mostly cloudy, with a high near 54.
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 CDT Mar 20, 2026
4pm CDT Mar 20, 2026-6pm CDT Mar 27, 2026



