Climatological Report (Daily)
Issued by NWS Chicago, IL

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674
CDUS43 KLOT 170634
CLIRFD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT SUN SEP 17 2017


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

...THE ROCKFORD IL CLIMATE SUMMARY FOR SEPTEMBER 16 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1905 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         87    200 PM  94    1931  76     11       84
  MINIMUM         60    529 AM  34    1916  52      8       65
  AVERAGE         74                        64     10       75

PRECIPITATION (IN)
  YESTERDAY        0.00          2.20 1936   0.11  -0.11     0.04
  MONTH TO DATE    0.07                      1.83  -1.76     1.53
  SINCE SEP 1      0.07                      1.83  -1.76     1.53
  SINCE JAN 1     36.86                     27.49   9.37    27.45

SNOWFALL (IN)
  YESTERDAY        0.0           0.0    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                         4     -4        0
  MONTH TO DATE   50                        32     18        2
  SINCE SEP 1     50                        32     18        2
  SINCE JUL 1     57                        46     11        2

 COOLING
  YESTERDAY        9                         3      6       10
  MONTH TO DATE   26                        63    -37       99
  SINCE SEP 1     26                        63    -37       99
  SINCE JAN 1    710                       790    -80     1016
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     S (200)
  AVERAGE WIND SPEED     8.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    90           500 AM
 LOWEST     42           300 PM
 AVERAGE    66

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


THE ROCKFORD IL CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   75        93      1988
                                             1927
 MINIMUM TEMPERATURE (F)   52        35      1916


SUNRISE AND SUNSET
SEPTEMBER 17 2017.....SUNRISE   639 AM CDT   SUNSET   702 PM CDT
SEPTEMBER 18 2017.....SUNRISE   640 AM CDT   SUNSET   700 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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