Point Forecast: East Alton IL
 38.88N 90.11W (Elev. 436 ft)
Last Update: 1:36 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)010203040506070809101112131415161718192021222300
Temperature (°F)707068686868697375788083838585858584848278767573
Dewpoint (°F)707068686868697172727272727272727272737373737373
Heat Index (°F)757884888891919191909087787675
Surface Wind (mph)122222335555555555533323
Wind DirNEENENENENENENEEEEEEEEEEEEEEEEE
Gust
Sky Cover (%)545456647075767472726562636567656362585352515056
Precipitation Potential (%)00001111112469121086444445
Relative Humidity (%)10010010010010010010093908277707065656565677074859094100
Rain------------------------------------------------
Thunder------------------------------------------------

Date07/16
Hour (CDT)010203040506070809101112131415161718192021222300
Temperature (°F)727272717170717780818283848585858584838179777675
Dewpoint (°F)727272717170717373737474747373727273737373737373
Heat Index (°F)7784868890919292919190898679777675
Surface Wind (mph)333323223566666666653222
Wind DirEEEEEESESESESESESSSSSSSSSSSSS
Gust
Sky Cover (%)565147535868566451434252616160605754514641363839
Precipitation Potential (%)556666141414141414464646464646191919191919
Relative Humidity (%)1001001001001001001008879777774726767656570727782889094
Rain------------------------ChcChcChcChcChcChcSChcSChcSChcSChcSChcSChc
Thunder------------------------ChcChcChcChcChcChcSChcSChcSChc------

Additional Forecasts and Information
International System of UnitsForecast Discussion
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City Digital FcstCounty Digital Fcst
Hazardous WeatherRiver Stages
STL Climate SummaryCOU Climate Summary
UIN Climate SummaryLocal Climatology
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