Point Forecast: Dekalb IL
 41.9N 88.76W
Last Update: 9:07 am CDT Jul 15, 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  
20ft 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  

Date07/1507/16
Hour (CDT)091011121314151617181920212223000102030405060708
Temperature (°F)767982838486878787858480777675737372727272717375
Dewpoint (°F)686969696969696969707171727271717171707070717273
Heat Index (°F)76828587889091929290898377767575
Surface Wind (mph)578888887655555333332233
Wind DirSSESSSSSSSSSSSSSSESSSSSSSSSWSSWSW
Gust
Sky Cover (%)31316202215252818262617224415162330426468697366
Precipitation Potential (%)0002141414111111118766644433377
Relative Humidity (%)767066636058555555616475838789929494969597989794
Rain------------------------------------------------
Thunder------------------------------------------------

Date07/17
Hour (CDT)091011121314151617181920212223000102030405060708
Temperature (°F)778083868788888886848178757372717170696867666667
Dewpoint (°F)747574747473737373727272727171717070696867666666
Heat Index (°F)77869194959696959390857875
Surface Wind (mph)566778888877666667777889
Wind DirSWSWSWSWSWSWSWSWSWSWSWSWSWSWWSWWSWWSWWWWWWNWWNWNW
Gust13141415141311131313131414
Sky Cover (%)644829313340475457606365666872768081838488919591
Precipitation Potential (%)77774848484848486464646464645454545454542727
Relative Humidity (%)90837569656261626469758289939698989910010010010010098
Rain--------ChcChcChcChcChcChcLklyLklyLklyLklyLklyLklyChcChcChcChcChcChcChcChc
Thunder--------ChcChcChcChcChcChcLklyLklyLklyLklyLklyLklyChcChcChcChcChcChcChcChc

Additional Forecasts and Information
International System of UnitsForecast Discussion
7-Day ForecastHourly Weather Graph
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