443
CDUS43 KLOT 270634
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT MON JUL 27 2026
...............................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR JULY 26 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1997 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 89 4:00 PM 96 1997 84 5 83
MINIMUM 70 2:27 AM 54 1998 64 6 72
2004
2024
AVERAGE 80 74 6 78
PRECIPITATION (IN)
YESTERDAY 0.00 0.57 2005 0.12 -0.12 T
MONTH TO DATE 3.99 3.02 0.97 4.85
SINCE JUN 1 10.62 6.67 3.95 7.50
SINCE JAN 1 23.50 18.93 4.57 15.56
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 1 0 1 0
SINCE JUN 1 25 33 -8 18
SINCE JUL 1 1 0 1 0
COOLING
YESTERDAY 15 9 6 13
MONTH TO DATE 270 230 40 302
SINCE JUN 1 424 405 19 569
SINCE JAN 1 483 461 22 602
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 6.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 11:00 PM
LOWEST 61 1:00 PM
AVERAGE 79
......................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 91 1997
2011
2023
MINIMUM TEMPERATURE (F) 64 53 2013
SUNRISE AND SUNSET
JULY 27 2026..........SUNRISE 5:42 AM CDT SUNSET 8:17 PM CDT
JULY 28 2026..........SUNRISE 5:43 AM CDT SUNSET 8:16 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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