Climatological Report (Daily)
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806
CDUS43 KLOT 290640
CLIDPA

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
140 AM CDT TUE SEP 29 2026

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

...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 28 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         74     84    2013  71      3       83
  MINIMUM         44     37    2000  49     -5       57
  AVERAGE         59                 60     -1       70

PRECIPITATION (IN)
  YESTERDAY        0.00   1.95 1999   0.09  -0.09     0.00
  MONTH TO DATE    3.71               2.81   0.90     0.64
  SINCE SEP 1      3.71               2.81   0.90     0.64
  SINCE JAN 1     32.85              26.18   6.67    21.17

DEGREE DAYS
 HEATING
  YESTERDAY        6                  6      0        0
  MONTH TO DATE   49                 86    -37       47
  SINCE SEP 1     49                 86    -37       47
  SINCE JUL 1     50                 97    -47       58

 COOLING
  YESTERDAY        0                  1     -1        5
  MONTH TO DATE  149                 86     63      114
  SINCE SEP 1    149                 86     63      114
  SINCE JAN 1    830                810     20     1022
............................................................


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           2:00 AM
 LOWEST     43           3:00 PM
 AVERAGE    72

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


THE DUPAGE AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   70        90      2025
 MINIMUM TEMPERATURE (F)   48        35      2018


SUNRISE AND SUNSET
SEPTEMBER 29 2026.....SUNRISE   6:48 AM CDT   SUNSET   6:38 PM CDT
SEPTEMBER 30 2026.....SUNRISE   6:49 AM CDT   SUNSET   6:36 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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