601
CDUS43 KLOT 010648
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
148 AM CDT THU OCT 01 2026
...............................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 30 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1997 TO 2026
WEATHER ITEM OBSERVED RECORD YEAR NORMAL DEPARTURE LAST
VALUE VALUE VALUE FROM YEAR
NORMAL
........................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 67 86 2019 70 -3 84
MINIMUM 59 35 2004 48 11 58
AVERAGE 63 59 4 71
PRECIPITATION (IN)
YESTERDAY 1.03R 0.35 1998 0.10 0.93 0.00
MONTH TO DATE 4.74 3.00 1.74 0.64
SINCE SEP 1 4.74 3.00 1.74 0.64
SINCE JAN 1 33.88 26.37 7.51 21.17
DEGREE DAYS
HEATING
YESTERDAY 2 7 -5 0
MONTH TO DATE 53 100 -47 47
SINCE SEP 1 53 100 -47 47
SINCE JUL 1 54 111 -57 58
COOLING
YESTERDAY 0 1 -1 6
MONTH TO DATE 149 88 61 127
SINCE SEP 1 149 88 61 127
SINCE JAN 1 830 812 18 1035
........................................................
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 7:00 AM
LOWEST 57 12:00 AM
AVERAGE 79
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THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 87 2019
MINIMUM TEMPERATURE (F) 48 31 2003
SUNRISE AND SUNSET
OCTOBER 1 2026.......SUNRISE 6:50 AM CDT SUNSET 6:34 PM CDT
OCTOBER 2 2026.......SUNRISE 6:51 AM CDT SUNSET 6:33 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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