Climatological Report (Daily)
Issued by NWS Chicago, IL

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859
CDUS43 KLOT 180640
CLILOT

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
140 AM CDT TUE AUG 18 2026

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

...THE ROMEOVILLE WFO CLIMATE SUMMARY FOR AUGUST 17 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1992 TO 2026


WEATHER ITEM   OBSERVED RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   VALUE       VALUE  FROM      YEAR
                                           NORMAL
............................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         82     90    1995  83     -1       84
  MINIMUM         65     49    1992  63      2       68
  AVERAGE         74                 73      1       76

PRECIPITATION (IN)
  YESTERDAY        0.00   2.59 2025   0.15  -0.15     2.59
  MONTH TO DATE    6.65               2.41   4.24     3.51
  SINCE JUN 1     19.84              11.59   8.25    11.37
  SINCE JAN 1     34.83              27.39   7.44    22.29

SNOWFALL (IN)
  YESTERDAY        0.0   MM      MM   0.0    0.0      0.0
  MONTH TO DATE    0.0                0.0    0.0      0.0
  SINCE JUN 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
  YESTERDAY        0                  0      0        0
  MONTH TO DATE    0                  0      0        0
  SINCE JUN 1     12                 25    -13       17
  SINCE JUL 1      0                  2     -2        0

 COOLING
  YESTERDAY        9                  8      1       11
  MONTH TO DATE  163                147     16      186
  SINCE JUN 1    679                647     32      809
  SINCE JAN 1    735                724     11      853
............................................................


THE ROMEOVILLE WFO CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   83        90      1995
 MINIMUM TEMPERATURE (F)   63        53      2002
                                             2012


SUNRISE AND SUNSET
AUGUST 18 2026........SUNRISE   6:04 AM CDT   SUNSET   7:47 PM CDT
AUGUST 19 2026........SUNRISE   6:05 AM CDT   SUNSET   7:46 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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