Point Forecast: Alton IL
 38.91N 90.13W (Elev. 499 ft)
Last Update: 11:37 am CDT Jun 6, 2024
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  
Haines Index
Lightning Activity Level
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  

Date06/0606/07
Hour (CDT)131415161718192021222300010203040506070809101112
Temperature (°F)828282838281797470686665646260605958606568757879
Dewpoint (°F)494949484847495051505050494949494849505152515049
Heat Index (°F)81818181818079757879
Surface Wind (mph)16161616151311977666666667789910
Wind DirNWNWNWNWNWNWNWNWNWNWNWWWWWWWWWWNWNWNWNW
Gust232424242220
Sky Cover (%)221147873211111111000012
Precipitation Potential (%)000000000000000000000000
Relative Humidity (%)323232303130354351525658586267676772696057433735
Rain------------------------------------------------
Thunder------------------------------------------------

Date06/08
Hour (CDT)131415161718192021222300010203040506070809101112
Temperature (°F)808282828382817772706867656463626363656769717273
Dewpoint (°F)505050505252545455545455565757575858585859596061
Heat Index (°F)8081818182818177
Surface Wind (mph)1110101097522335555577356789
Wind DirNWNWNWNWNWNWNWNWESESESESSSSSSSSSSSSW
Gust
Sky Cover (%)11011328384236364558687169697176717375777676
Precipitation Potential (%)001123444444333333333333494949494949
Relative Humidity (%)353333333435394555576165737881848484787370666666
Rain------------------------ChcChcChcChcChcChcChcChcChcChcChcChc
Thunder------------------------------------------------

Additional Forecasts and Information
International System of UnitsForecast Discussion
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STL Climate SummaryCOU Climate Summary
UIN Climate SummaryLocal Climatology
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