Point Forecast: Dekalb IL
 41.9N 88.76W
Last Update: 9:56 pm CDT Jul 13, 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  

Date07/1307/14
Hour (CDT)222300010203040506070809101112131415161718192021
Temperature (°F)686767656464636362657175798183848485858484827975
Dewpoint (°F)626261616161616162636465666565656565666667676766
Heat Index (°F)75818385868687878786857975
Surface Wind (mph)233322322333555555553322
Wind DirSWSSWSSWSWSWSWWSWWSWWSWWSWWSWWSWWSWWSWWSWWSWWSWWSWWSWWWWSWSSWS
Gust
Sky Cover (%)25252520202015151515117324556666555
Precipitation Potential (%)000000000000000000000000
Relative Humidity (%)808283868890939598927971635956535352535456606774
Rain------------------------------------------------
Thunder------------------------------------------------

Date07/15
Hour (CDT)222300010203040506070809101112131415161718192021
Temperature (°F)727069676666656565677378808284858687878786838077
Dewpoint (°F)656564636362626263646567696970707070707070707069
Heat Index (°F)78838688909192929290888477
Surface Wind (mph)233333333355667777766553
Wind DirSSESSESSESSESSESSESSSSESSESSESSSSSSSSSSSSSSE
Gust13131311
Sky Cover (%)55677891213141515141822273034373635343433
Precipitation Potential (%)000111111777777171717171717121212
Relative Humidity (%)808384898889919193897670676462605857575861657177
Rain------------------------------SChcSChcSChcSChcSChcSChc------
Thunder------------------------------SChcSChcSChcSChcSChcSChc------

Additional Forecasts and Information
International System of UnitsForecast Discussion
7-Day ForecastHourly Weather Graph
Graphical Hazardous Weather OutlookHazardous Weather
Regional Weather ConditionsPast Weather Information