Climatological Report (Daily)
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523
CDUS43 KLOT 092145
CLIORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
445 PM CDT THU OCT 09 2025

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 9 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         64   1:26 PM  86    1949  66     -2       70
                                      2010
  MINIMUM         45   3:34 AM  30    2000  48     -3       51
  AVERAGE         55                        57     -2       61

PRECIPITATION (IN)
  TODAY            0.00          2.27 1954   0.11  -0.11     0.00
  MONTH TO DATE    1.35                      1.00   0.35     0.01
  SINCE SEP 1      1.84                      4.19  -2.35     1.33
  SINCE JAN 1     24.29                     30.90  -6.61    28.19

SNOWFALL (IN)
  TODAY            0.0           T    1906   0.0    0.0      0.0
                                      1925
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE SEP 1      0.0                       0.0    0.0      0.0
  SINCE JUL 1      0.0                       0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY           10                         9      1        4
  MONTH TO DATE   24                        69    -45       22
  SINCE SEP 1     56                       146    -90       37
  SINCE JUL 1     61                       152    -91       37

 COOLING
  TODAY            0                         1     -1        0
  MONTH TO DATE   55                         9     46        9
  SINCE SEP 1    221                       125     96      199
  SINCE JAN 1   1213                       997    216     1185
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     E (110)
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION     E (100)
  AVERAGE WIND SPEED     5.5


SKY COVER
  AVERAGE SKY COVER 0.2


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    86           3:00 AM
 LOWEST     39           2:00 PM
 AVERAGE    63

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   65        86      1962
 MINIMUM TEMPERATURE (F)   48        27      1964


SUNRISE AND SUNSET
OCTOBER  9 2025.......SUNRISE   6:58 AM CDT   SUNSET   6:19 PM CDT
OCTOBER 10 2025.......SUNRISE   6:59 AM CDT   SUNSET   6:18 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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