Climatological Report (Daily)
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CDUS43 KLOT 122133
CLIDPA

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CDT SAT SEP 12 2026

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

...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 12 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         85        MM  90    2005  77      8       85
  MINIMUM         61        MM  42    1997  55      6       55
  AVERAGE         73                        66      7       70

PRECIPITATION (IN)
  TODAY            0.00          0.70 2008   0.10  -0.10     0.00
  MONTH TO DATE    T                         1.20  -1.20     0.03
  SINCE SEP 1      T                         1.20  -1.20     0.03
  SINCE JAN 1     29.14                     24.57   4.57    20.56

DEGREE DAYS
 HEATING
  TODAY            0                         2     -2        0
  MONTH TO DATE    0                        17    -17       47
  SINCE SEP 1      0                        17    -17       47
  SINCE JUL 1      1                        28    -27       58

 COOLING
  TODAY            8                         3      5        5
  MONTH TO DATE  126                        51     75       15
  SINCE SEP 1    126                        51     75       15
  SINCE JAN 1    807                       775     32      923
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    SW (230)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    SW (240)
  AVERAGE WIND SPEED     5.7


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    96           2:00 AM
 LOWEST     51           1:00 PM
 AVERAGE    74

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


THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        94      2005
 MINIMUM TEMPERATURE (F)   55        39      2014


SUNRISE AND SUNSET
SEPTEMBER 12 2026.....SUNRISE   6:30 AM CDT   SUNSET   7:08 PM CDT
SEPTEMBER 13 2026.....SUNRISE   6:31 AM CDT   SUNSET   7:06 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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