817
CDUS43 KLOT 180636
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
136 AM CDT SAT OCT 18 2025
...............................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR OCTOBER 17 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1997 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 76 3:07 PM 83 2016 62 14 65
MINIMUM 55 3:44 AM 28 2004 42 13 30
AVERAGE 66 52 14 48
PRECIPITATION (IN)
YESTERDAY 0.00 3.05 1998 0.10 -0.10 0.00
MONTH TO DATE 1.85 1.76 0.09 0.13
SINCE SEP 1 2.49 4.76 -2.27 1.55
SINCE JAN 1 23.02 28.13 -5.11 25.87
DEGREE DAYS
HEATING
YESTERDAY 0 13 -13 17
MONTH TO DATE 73 177 -104 136
SINCE SEP 1 120 277 -157 169
SINCE JUL 1 131 288 -157 178
COOLING
YESTERDAY 1 0 1 0
MONTH TO DATE 48 9 39 3
SINCE SEP 1 175 97 78 113
SINCE JAN 1 1083 821 262 911
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WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 11.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 69 6:00 AM
LOWEST 50 2:00 PM
AVERAGE 60
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THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 62 78 2007
MINIMUM TEMPERATURE (F) 41 27 2015
SUNRISE AND SUNSET
OCTOBER 18 2025.......SUNRISE 7:09 AM CDT SUNSET 6:06 PM CDT
OCTOBER 19 2025.......SUNRISE 7:10 AM CDT SUNSET 6:05 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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