Climatological Report (Daily)
Issued by NWS Chicago, IL

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110
CDUS43 KLOT 160636
CLILOT

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
136 AM CDT WED SEP 16 2026

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

...THE ROMEOVILLE WFO CLIMATE SUMMARY FOR SEPTEMBER 15 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         86     89    1994  77      9       85
                               2024
  MINIMUM         65     38    2007  56      9       62
  AVERAGE         76                 66     10       74

PRECIPITATION (IN)
  YESTERDAY        0.04   1.26 2019   0.10  -0.06     0.00
  MONTH TO DATE    0.12               1.72  -1.60     0.43
  SINCE SEP 1      0.12               1.72  -1.60     0.43
  SINCE JAN 1     35.60              31.06   4.54    25.44

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 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
  YESTERDAY        0                  2     -2        0
  MONTH TO DATE    3                 20    -17       49
  SINCE SEP 1      3                 20    -17       49
  SINCE JUL 1      3                 26    -23       61

 COOLING
  YESTERDAY       11                  4      7        9
  MONTH TO DATE  154                 72     82       44
  SINCE SEP 1    154                 72     82       44
  SINCE JAN 1    989                897     92      947
............................................................


THE ROMEOVILLE WFO CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        91      2018
 MINIMUM TEMPERATURE (F)   55        42      2000
                                             2014


SUNRISE AND SUNSET
SEPTEMBER 16 2026.....SUNRISE   6:34 AM CDT   SUNSET   7:00 PM CDT
SEPTEMBER 17 2026.....SUNRISE   6:35 AM CDT   SUNSET   6:58 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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