Hazardous Weather Conditions
Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Fair
81°F
27°C
| Humidity | 94% |
| Wind Speed | Vrbl 3 mph |
| Barometer | 30.00 in |
| Dewpoint | 79°F (26°C) |
| Visibility | 10.00 mi |
| Heat Index | 89°F (32°C) |
| Last update | 17 Aug 8:50 pm CDT |
Extended Forecast for
3 Miles NNE Granite City IL
Heat Advisory August 17, 09:15pm until August 18, 08:00pm
NOW until 8:00pm Mon
Heat Advisory
Tonight
Low: 77 °F
Partly Cloudy
Monday
High: 97 °F
Mostly Sunny
then Chance
ShowersMonday Night
Low: 75 °F
Chance
Showers then
Slight Chance
T-stormsTuesday
High: 92 °F
Chance
T-stormsTuesday Night
Low: 73 °F
Chance
T-storms then
Chance
ShowersWednesday
High: 86 °F
Slight Chance
T-stormsWednesday Night
Low: 67 °F
Partly Cloudy
Thursday
High: 86 °F
Mostly Sunny
Detailed Forecast
Tonight
Partly cloudy, with a low around 77. Southeast wind 3 to 5 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 107. Southeast wind 3 to 7 mph.
Monday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 75. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Heat index values as high as 102. Calm wind becoming west around 6 mph in the morning.
Tuesday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 73. Northwest wind 3 to 5 mph. Chance of precipitation is 40%.
Wednesday
A slight chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 86. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Mostly sunny, with a high near 86.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 68.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Sunny, with a high near 82.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles NNE Granite City IL
38.75°N 90.11°W (Elev. 417 ft)
38.75°N 90.11°W (Elev. 417 ft)
8:56 pm CDT Aug 17, 2025
9pm CDT Aug 17, 2025-6pm CDT Aug 24, 2025
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