Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Light Rain
39°F
4°C
| Humidity | 86% |
| Wind Speed | N 12 G 26 mph |
| Barometer | 30.25 in (1024.1 mb) |
| Dewpoint | 35°F (2°C) |
| Visibility | 10.00 mi |
| Wind Chill | 32°F (0°C) |
| Last update | 27 Mar 6:53 am CDT |
Extended Forecast for
Granite City IL
Today
High: 52 °F
Chance
Showers then
Partly SunnyTonight

Low: 30 °F
Mostly Clear
Saturday

High: 56 °F
Sunny
Saturday Night

Low: 41 °F
Partly Cloudy
Sunday

High: 69 °F
Partly Sunny
Sunday Night

Low: 58 °F
Partly Cloudy
Monday

High: 83 °F
Mostly Sunny
Monday Night
Low: 65 °F
Partly Cloudy
then Slight
Chance
T-stormsTuesday

High: 86 °F
Slight Chance
Rain
Detailed Forecast
Today
A 30 percent chance of showers, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 52. North wind 15 to 17 mph, with gusts as high as 33 mph.
Tonight
Mostly clear, with a low around 30. North wind 5 to 13 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 56. Calm wind becoming south 5 to 8 mph in the morning.
Saturday Night
Partly cloudy, with a low around 41. South wind 6 to 8 mph.
Sunday
Partly sunny, with a high near 69. South wind 7 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 83.
Monday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 65.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 86.
Tuesday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 63.
Wednesday
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 77.
Wednesday Night
Rain and thunderstorms likely. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Thursday
Rain and thunderstorms likely. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
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)
7:36 am CDT Mar 27, 2026
7am CDT Mar 27, 2026-6pm CDT Apr 2, 2026


