Point Forecast: Illinois Valley Rgnl-Walter A Duncan Field Airport IL
 41.34N 89.14W
Last Update: 6:27 pm 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  
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  

Date07/1407/15
Hour (CDT)212223000102030405060708091011121314151617181920
Temperature (°F)767372717069686767686974788183858688888887868583
Dewpoint (°F)676565646464646464656667697070706970707171717171
Heat Index (°F)76788488899192939493929087
Surface Wind (mph)233223222223566667766665
Wind DirNEEEEEEEEEEEESESESSESSESSSSSSSSS
Gust
Sky Cover (%)131311968101215182120201922262933374141424237
Precipitation Potential (%)000000000000055514141417171755
Relative Humidity (%)747679818284878989898981746964605756565759606367
Rain--------------------------------------SChcSChcSChc----
Thunder--------------------------------------SChcSChcSChc----

Date07/16
Hour (CDT)212223000102030405060708091011121314151617181920
Temperature (°F)807675747372727271727274788184868889909089868481
Dewpoint (°F)707170707070696970707071727373727272727171717271
Heat Index (°F)837675788690939596979695928985
Surface Wind (mph)555333333555566778888877
Wind DirSSSESSESSSSSSSSSSWSSWSWSWSWSWSWWSWWSWWSWWSWWSWSW
Gust11131414151515141313
Sky Cover (%)322624211821232637475651474238332832353945525858
Precipitation Potential (%)55556666668888882929292929295555
Relative Humidity (%)748386888991929394949590837569635956555557616673
Rain--------------------------------ChcChcChcChcChcChcLklyLkly
Thunder--------------------------------ChcChcChcChcChcChcLklyLkly

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