Climatological Report (Daily)
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173
CDUS43 KLOT 150634
CLIDPA

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT TUE SEP 15 2026

...................................

...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 14 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         70     89    2024  76     -6       86
  MINIMUM         46     39    2011  55     -9       61
  AVERAGE         58                 65     -7       74

PRECIPITATION (IN)
  YESTERDAY        0.00   1.21 2008   0.10  -0.10     0.00
  MONTH TO DATE    0.01               1.39  -1.38     0.34
  SINCE SEP 1      0.01               1.39  -1.38     0.34
  SINCE JAN 1     29.15              24.76   4.39    20.87

DEGREE DAYS
 HEATING
  YESTERDAY        7                  3      4        0
  MONTH TO DATE   10                 22    -12       47
  SINCE SEP 1     10                 22    -12       47
  SINCE JUL 1     11                 33    -22       58

 COOLING
  YESTERDAY        0                  3     -3        9
  MONTH TO DATE  127                 57     70       32
  SINCE SEP 1    127                 57     70       32
  SINCE JAN 1    808                781     27      940
............................................................


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97           4:00 AM
 LOWEST     45           5:00 PM
 AVERAGE    71

..........................................................


THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   76        89      2024
 MINIMUM TEMPERATURE (F)   54        36      2007


SUNRISE AND SUNSET
SEPTEMBER 15 2026.....SUNRISE   6:33 AM CDT   SUNSET   7:02 PM CDT
SEPTEMBER 16 2026.....SUNRISE   6:34 AM CDT   SUNSET   7:01 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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