Climatological Report (Daily)
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866
CDUS43 KLOT 130635
CLIMDW

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
135 AM CDT WED AUG 13 2025

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

...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR AUGUST 12 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2025


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         88  12:03 PM 100    1995  83      5       81
  MINIMUM         72   3:22 PM  50    1930  67      5       61
  AVERAGE         80                        75      5       71

PRECIPITATION (IN)
  YESTERDAY        0.18          2.21 2016   0.13   0.05     0.00
  MONTH TO DATE    0.35                      1.49  -1.14     0.94
  SINCE JUN 1     12.38                      9.05   3.33    10.69
  SINCE JAN 1     21.95                     21.53   0.42    26.67

DEGREE DAYS
 HEATING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE JUN 1      9                        25    -16        3
  SINCE JUL 1      0                         1     -1        0

 COOLING
  YESTERDAY       15                        10      5        6
  MONTH TO DATE  166                       127     39      126
  SINCE JUN 1    934                       702    232      800
  SINCE JAN 1    985                       784    201      913
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION     S (180)
  HIGHEST GUST SPEED    31   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED     7.0


SKY COVER
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    91          10:00 PM
 LOWEST     59          12:00 PM
 AVERAGE    75

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


THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   83       101      1936
 MINIMUM TEMPERATURE (F)   67        52      1967


SUNRISE AND SUNSET
AUGUST 13 2025........SUNRISE   5:58 AM CDT   SUNSET   7:53 PM CDT
AUGUST 14 2025........SUNRISE   5:59 AM CDT   SUNSET   7:52 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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