668
CDUS43 KLOT 172136
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
436 PM CDT MON AUG 17 2026
...............................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR AUGUST 17 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 80 2:59 PM 87 2015 82 -2 85
MINIMUM 65 5:19 AM 51 2013 62 3 71
AVERAGE 73 72 1 78
PRECIPITATION (IN)
TODAY 0.00 0.84 2000 0.13 -0.13 0.59
MONTH TO DATE 4.21 2.16 2.05 1.18
SINCE JUN 1 16.25 9.43 6.82 10.79
SINCE JAN 1 29.13 21.69 7.44 18.85
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 25 37 -12 18
SINCE JUL 1 1 4 -3 0
COOLING
TODAY 8 7 1 13
MONTH TO DATE 147 133 14 189
SINCE JUN 1 608 580 28 821
SINCE JAN 1 667 636 31 854
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 6.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 2:00 AM
LOWEST 45 3:00 PM
AVERAGE 69
......................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 88 2025
MINIMUM TEMPERATURE (F) 62 48 2012
SUNRISE AND SUNSET
AUGUST 17 2026........SUNRISE 6:03 AM CDT SUNSET 7:50 PM CDT
AUGUST 18 2026........SUNRISE 6:04 AM CDT SUNSET 7:49 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page