467
CDUS43 KLOT 220640
CLIDPA
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
140 AM CDT MON SEP 22 2025
...............................
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 21 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 82 3:11 PM 92 2017 74 8 92
2024
MINIMUM 65 4:50 AM 40 2006 52 13 56
AVERAGE 74 63 11 74
PRECIPITATION (IN)
YESTERDAY 0.04 0.51 2019 0.11 -0.07 0.00
MONTH TO DATE 0.62 2.11 -1.49 0.05
SINCE SEP 1 0.62 2.11 -1.49 0.05
SINCE JAN 1 21.15 25.48 -4.33 24.37
DEGREE DAYS
HEATING
YESTERDAY 0 4 -4 0
MONTH TO DATE 47 47 0 22
SINCE SEP 1 47 47 0 22
SINCE JUL 1 58 58 0 31
COOLING
YESTERDAY 9 2 7 9
MONTH TO DATE 81 74 7 94
SINCE SEP 1 81 74 7 94
SINCE JAN 1 989 798 191 892
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 5.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 5:00 AM
LOWEST 56 2:00 PM
AVERAGE 77
......................................................
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 94 2017
MINIMUM TEMPERATURE (F) 51 38 1999
SUNRISE AND SUNSET
SEPTEMBER 22 2025.....SUNRISE 6:41 AM CDT SUNSET 6:50 PM CDT
SEPTEMBER 23 2025.....SUNRISE 6:42 AM CDT SUNSET 6:48 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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