027
CDUS43 KLOT 212140
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
440 PM CDT MON SEP 21 2026
...............................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 21 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 65 92 2017 74 -9 82
2024
MINIMUM 59 40 2006 52 7 65
AVERAGE 62 63 -1 74
PRECIPITATION (IN)
TODAY T 0.51 2019 0.11 -0.11 0.04
MONTH TO DATE 3.71 2.11 1.60 0.62
SINCE SEP 1 3.71 2.11 1.60 0.62
SINCE JAN 1 32.85 25.48 7.37 21.15
DEGREE DAYS
HEATING
TODAY 3 4 -1 0
MONTH TO DATE 13 47 -34 47
SINCE SEP 1 13 47 -34 47
SINCE JUL 1 14 58 -44 58
COOLING
TODAY 0 2 -2 9
MONTH TO DATE 149 74 75 81
SINCE SEP 1 149 74 75 81
SINCE JAN 1 830 798 32 989
........................................................
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 12:00 AM
LOWEST 70 3:00 PM
AVERAGE 80
......................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 94 2017
MINIMUM TEMPERATURE (F) 51 38 1999
SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE 6:39 AM CDT SUNSET 6:52 PM CDT
SEPTEMBER 22 2026.....SUNRISE 6:40 AM CDT SUNSET 6:50 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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