Climatological Report (Daily)
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CDUS43 KLOT 252135
CLIDPA

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
435 PM CDT FRI SEP 25 2026

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

...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 25 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         66     92    2017  72     -6       79
  MINIMUM         59     38    2001  50      9       54
  AVERAGE         63                 61      2       67

PRECIPITATION (IN)
  TODAY            T      0.23 2018   0.10  -0.10     0.00
  MONTH TO DATE    3.71               2.52   1.19     0.64
  SINCE SEP 1      3.71               2.52   1.19     0.64
  SINCE JAN 1     32.85              25.89   6.96    21.17

DEGREE DAYS
 HEATING
  TODAY            2                  6     -4        0
  MONTH TO DATE   26                 68    -42       47
  SINCE SEP 1     26                 68    -42       47
  SINCE JUL 1     27                 79    -52       58

 COOLING
  TODAY            0                  2     -2        2
  MONTH TO DATE  149                 82     67       97
  SINCE SEP 1    149                 82     67       97
  SINCE JAN 1    830                806     24     1005
............................................................


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           7:00 AM
 LOWEST     63           3:00 PM
 AVERAGE    78

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


THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   72        91      2017
 MINIMUM TEMPERATURE (F)   50        38      2000


SUNRISE AND SUNSET
SEPTEMBER 25 2026.....SUNRISE   6:44 AM CDT   SUNSET   6:45 PM CDT
SEPTEMBER 26 2026.....SUNRISE   6:45 AM CDT   SUNSET   6:43 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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