Hazardous Weather Conditions
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
59°F
15°C
| Humidity | 33% |
| Wind Speed | W 18 G 33 mph |
| Barometer | 29.93 in (1013.4 mb) |
| Dewpoint | 30°F (-1°C) |
| Visibility | 10.00 mi |
| Last update | 13 Mar 11:53 am CDT |
Extended Forecast for
Granite City IL
This Afternoon

High: 62 °F
Mostly Sunny
Tonight

Low: 37 °F
Partly Cloudy
Saturday

High: 64 °F
Mostly Sunny
Saturday Night

Low: 55 °F
Mostly Cloudy
Sunday
High: 70 °F
Breezy.
Chance Rain
then ShowersSunday Night

Low: 23 °F
Rain/Snow and
BlusteryMonday

High: 29 °F
Chance Snow
and BlusteryMonday Night
Low: 14 °F
Mostly Clear
and Blustery
then Mostly
ClearTuesday

High: 36 °F
Mostly Sunny
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 62. West wind 14 to 16 mph, with gusts as high as 26 mph.
Tonight
Partly cloudy, with a low around 37. Northwest wind 5 to 7 mph becoming light and variable.
Saturday
Mostly sunny, with a high near 64. Southeast wind 6 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Mostly cloudy, with a low around 55. Southeast wind 10 to 14 mph, with gusts as high as 24 mph.
Sunday
Rain, mainly between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 70. Breezy, with a south wind 18 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 90%.
Sunday Night
Rain before 10pm, then snow, possibly mixed with rain between 10pm and 1am, then a chance of snow after 1am. Some thunder is also possible. Low around 23. Blustery. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Monday
A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 29. Blustery.
Monday Night
Mostly clear, with a low around 14. Blustery.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 29.
Wednesday
Mostly cloudy, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
Sunny, with a high near 70.
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)
11:41 am CDT Mar 13, 2026
12pm CDT Mar 13, 2026-6pm CDT Mar 19, 2026



