Climatological Report (Daily)
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199
CDUS43 KLOT 210634
CLIUGN

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT MON SEP 21 2026

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

...THE WAUKEGAN IL CLIMATE SUMMARY FOR SEPTEMBER 20 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 2000 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         66   1:10 AM  89    2024  72     -6       80
  MINIMUM         61  11:37 PM  40    2003  52      9       65
                                      2006
  AVERAGE         64                        62      2       73

PRECIPITATION (IN)
  YESTERDAY        1.54R         0.78 2014   0.12   1.42     0.07
  MONTH TO DATE    4.31                      2.37   1.94     1.67
  SINCE SEP 1      4.31                      2.37   1.94     1.67
  SINCE JAN 1     35.20                     26.73   8.47    21.30

DEGREE DAYS
 HEATING
  YESTERDAY        1                         5     -4        0
  MONTH TO DATE   14                        55    -41       36
  SINCE SEP 1     14                        55    -41       36
  SINCE JUL 1     20                        80    -60       52

 COOLING
  YESTERDAY        0                         2     -2        8
  MONTH TO DATE  112                        60     52       58
  SINCE SEP 1    112                        60     52       58
  SINCE JAN 1    694                       607     87      831
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION    NE (30)
  HIGHEST GUST SPEED    33   HIGHEST GUST DIRECTION     E (90)
  AVERAGE WIND SPEED    11.4


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           2:00 AM
 LOWEST     80          10:00 PM
 AVERAGE    90

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


THE WAUKEGAN IL CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   71        88      2010
                                             2017
 MINIMUM TEMPERATURE (F)   52        37      2006


SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE   6:38 AM CDT   SUNSET   6:50 PM CDT
SEPTEMBER 22 2026.....SUNRISE   6:39 AM CDT   SUNSET   6:49 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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