Hazardous Weather Conditions
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
51°F
11°C
| Humidity | 36% |
| Wind Speed | S 8 mph |
| Barometer | 30.25 in (1024.4 mb) |
| Dewpoint | 25°F (-4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 48°F (9°C) |
| Last update | 12 Mar 1:53 pm CDT |
Extended Forecast for
Granite City IL
This Afternoon

High: 55 °F
Sunny
Tonight
Low: 46 °F
Partly Cloudy
then Partly
Cloudy and
BreezyFriday

High: 61 °F
Mostly Sunny
Friday Night

Low: 36 °F
Partly Cloudy
Saturday

High: 65 °F
Partly Sunny
Saturday Night

Low: 54 °F
Mostly Cloudy
Sunday
High: 69 °F
Breezy.
Chance Rain
then RainSunday Night

Low: 22 °F
Rain/Snow and
BreezyMonday

High: 29 °F
Slight Chance
Snow and
Blustery
Detailed Forecast
This Afternoon
Sunny, with a high near 55. Southwest wind around 10 mph.
Tonight
Partly cloudy, with a low around 46. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 32 mph.
Friday
Mostly sunny, with a high near 61. West wind 13 to 16 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 36. Northwest wind around 6 mph becoming calm.
Saturday
Partly sunny, with a high near 65. Southeast wind 6 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 54.
Sunday
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1pm. High near 69. Breezy. Chance of precipitation is 90%.
Sunday Night
Rain and snow before 1am, then a chance of snow. Some thunder is also possible. Low around 22. Breezy. Chance of precipitation is 80%.
Monday
A 20 percent chance of snow before 1pm. Partly sunny, with a high near 29. Blustery.
Monday Night
Mostly clear, with a low around 14.
Tuesday
Mostly sunny, with a high near 35.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 55.
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)
1:41 pm CDT Mar 12, 2026
2pm CDT Mar 12, 2026-6pm CDT Mar 18, 2026



