Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
61°F
16°C
| Humidity | 30% |
| Wind Speed | S 10 mph |
| Barometer | 30.08 in (1018.6 mb) |
| Dewpoint | 29°F (-2°C) |
| Visibility | 10.00 mi |
| Last update | 13 Feb 3:53 pm CST |
Extended Forecast for
Granite City IL
Tonight

Low: 37 °F
Increasing
CloudsSaturday

High: 52 °F
Rain
Saturday Night

Low: 45 °F
Rain
Sunday
High: 58 °F
Slight Chance
Rain then
Mostly SunnySunday Night

Low: 39 °F
Mostly Clear
Washington's Birthday

High: 62 °F
Mostly Sunny
Monday Night

Low: 44 °F
Mostly Cloudy
Tuesday

High: 65 °F
Mostly Cloudy
Tuesday Night

Low: 56 °F
Mostly Cloudy
Detailed Forecast
Tonight
Increasing clouds, with a low around 37. South wind around 6 mph becoming calm after midnight.
Saturday
Rain, mainly after 7am. High near 52. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 90%.
Saturday Night
Rain, mainly before 5am. Low around 45. East wind around 7 mph. Chance of precipitation is 90%.
Sunday
A 20 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 58. Northeast wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 39. North wind around 5 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 62.
Monday Night
Mostly cloudy, with a low around 44.
Tuesday
Mostly cloudy, with a high near 65.
Tuesday Night
Mostly cloudy, with a low around 56.
Wednesday
Partly sunny, with a high near 72.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 48.
Thursday
A 20 percent chance of rain. Mostly sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 41.
Friday
Mostly sunny, with a high near 58.
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)
4:56 pm CST Feb 13, 2026
5pm CST Feb 13, 2026-6pm CST Feb 20, 2026


