Point Forecast: Granite City IL
 38.73N 90.11W (Elev. 417 ft)
Last Update: 1:51 am CDT Jul 14, 2025
Tabular Forecast
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Weather ElementsFire WeatherProbabilistic Forecasts (Experimental)
Description | Survey
Temperature (°F)
Dewpoint (°F)
Heat Index (°F)

Surface Wind  
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)

Rain
Thunder
Fog
Mixing Height  
Trans. Wind  
Vent Rate (x1000 mph-ft)
Quantitative Precipitation     info
    0.100.250.501.00
Snowfall     info
    0.1in1in3in6in12in

48-Hour Period Starting:       Back 2 Days  

Date07/1407/15
Hour (CDT)020304050607080910111213141516171819202122230001
Temperature (°F)696969696971737579818285868786868685817877767473
Dewpoint (°F)696969696971727273737373737373737373737373737372
Heat Index (°F)757986879293949393939286787776
Surface Wind (mph)222222335556665555333323
Wind DirNEENENENENENENEEEEEEEEEEEEESESESESE
Gust
Sky Cover (%)595866717778778077716666697469676763605653555858
Precipitation Potential (%)0001122333691216131185556666
Relative Humidity (%)100100100100100100979082777467656365656567778588909797
Rain--------------------------SChc--------------------
Thunder--------------------------SChc--------------------

Date07/16
Hour (CDT)020304050607080910111213141516171819202122230001
Temperature (°F)727272727174767981838485868686858483817977767575
Dewpoint (°F)727272727172737474757574747474747373737373737373
Heat Index (°F)767986909293949494939089867977767575
Surface Wind (mph)333332235666666666532222
Wind DirEEEESESESESESESESSSSSSSSSSSSSS
Gust
Sky Cover (%)505259667674765157425261606059606263564942424242
Precipitation Potential (%)6777614141414141450505050505019191919191910
Relative Humidity (%)10010010010010093908579777470686868707072778288909494
Rain----------------------ChcChcChcChcChcChcSChcSChcSChcSChcSChcSChc--
Thunder----------------------ChcChcChcChcChcChcSChcSChcSChc--------

Additional Forecasts and Information
International System of UnitsForecast Discussion
7-Day ForecastHourly Weather Graph
City Digital FcstCounty Digital Fcst
Hazardous WeatherRiver Stages
STL Climate SummaryCOU Climate Summary
UIN Climate SummaryLocal Climatology
Weather Roundup