Climatological Report (Daily)
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027
CDUS43 KLOT 110634
CLIDPA

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT FRI SEP 11 2026

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

...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 10 2026...

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)
 YESTERDAY
  MAXIMUM         77        MM  92    2005  78     -1       82
                                      2013
  MINIMUM         57        MM  42    1999  56      1       54
                                      2017
  AVERAGE         67                        67      0       68

PRECIPITATION (IN)
  YESTERDAY        0.00          1.41 2014   0.10  -0.10     0.00
  MONTH TO DATE    T                         1.01  -1.01     0.03
  SINCE SEP 1      T                         1.01  -1.01     0.03
  SINCE JAN 1     29.14                     24.38   4.76    20.56

DEGREE DAYS
 HEATING
  YESTERDAY        0                         2     -2        0
  MONTH TO DATE    0                        13    -13       47
  SINCE SEP 1      0                        13    -13       47
  SINCE JUL 1      1                        24    -23       58

 COOLING
  YESTERDAY        2                         4     -2        3
  MONTH TO DATE  116                        44     72        5
  SINCE SEP 1    116                        44     72        5
  SINCE JAN 1    797                       768     29      913
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED     7   HIGHEST WIND DIRECTION    SE (120)
  HIGHEST GUST SPEED    MM   HIGHEST GUST DIRECTION    MM
  AVERAGE WIND SPEED     2.9


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  FOG W/VISIBILITY <= 1/4 MILE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           3:00 AM
 LOWEST     51           5:00 PM
 AVERAGE    76

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


THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        91      2005
                                             2019
 MINIMUM TEMPERATURE (F)   56        43      1999


SUNRISE AND SUNSET
SEPTEMBER 11 2026.....SUNRISE   6:29 AM CDT   SUNSET   7:09 PM CDT
SEPTEMBER 12 2026.....SUNRISE   6:30 AM CDT   SUNSET   7:08 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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