


Hazardous Weather Conditions
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Mostly Cloudy
91°F
33°C
Humidity | 50% |
Wind Speed | Vrbl 6 mph |
Barometer | 30.00 in (1015.3 mb) |
Dewpoint | 70°F (21°C) |
Visibility | 10.00 mi |
Heat Index | 97°F (36°C) |
Last update | 20 Jun 2:53 pm CDT |
Extended Forecast for
Granite City IL
Extreme Heat Warning June 21, 12:00pm until June 24, 09:00pm
This Afternoon
High: 94 °F
Mostly Sunny
Tonight
Low: 77 °F
Clear
Saturday
High: 98 °F
Hot
Saturday Night
Low: 77 °F
Mostly Clear
Sunday
High: 97 °F
Hot
Sunday Night
Low: 78 °F
Mostly Clear
Monday
High: 98 °F
Hot
Monday Night
Low: 78 °F
Partly Cloudy
Tuesday
High: 97 °F
Slight Chance
Showers
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 94. South wind 6 to 11 mph.
Tonight
Clear, with a low around 77. South wind 7 to 11 mph, with gusts as high as 21 mph.
Saturday
Sunny and hot, with a high near 98. Heat index values as high as 109. Southwest wind 9 to 16 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 77. South wind 7 to 13 mph, with gusts as high as 22 mph.
Sunday
Sunny and hot, with a high near 97. Southwest wind 7 to 10 mph.
Sunday Night
Mostly clear, with a low around 78.
Monday
Sunny and hot, with a high near 98.
Monday Night
Partly cloudy, with a low around 78.
Tuesday
A 20 percent chance of showers before 1pm. Mostly sunny and hot, with a high near 97.
Tuesday Night
Partly cloudy, with a low around 77.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96.
Wednesday Night
Partly cloudy, with a low around 77.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Granite City IL
38.71°N 90.14°W (Elev. 410 ft)
38.71°N 90.14°W (Elev. 410 ft)
2:21 pm CDT Jun 20, 2025
2pm CDT Jun 20, 2025-6pm CDT Jun 26, 2025