Climatological Report (Daily)
Issued by NWS Chicago, IL

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CDUS43 KLOT 090633
CLIRFD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1233 AM CST SAT DEC 9 2017


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

...THE ROCKFORD IL CLIMATE SUMMARY FOR DECEMBER 8 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         36    300 PM  60    1991  35      1       24
  MINIMUM         15    131 AM  -6    1958  20     -5       15
  AVERAGE         26                        28     -2       20

PRECIPITATION (IN)
  YESTERDAY        T             0.67 2009   0.08  -0.08      T
  MONTH TO DATE    T                         0.61  -0.61     0.54
  SINCE DEC 1      T                         0.61  -0.61     0.54
  SINCE JAN 1     44.18                     34.87   9.31    33.82

SNOWFALL (IN)
  YESTERDAY        T             6.6  2009   0.4   -0.4       T
  MONTH TO DATE    0.2                       2.5   -2.3      5.3
  SINCE DEC 1      0.2                       2.5   -2.3      5.3
  SINCE JUL 1      0.4                       4.3   -3.9      5.3
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       39                        37      2       45
  MONTH TO DATE  241                       286    -45      275
  SINCE DEC 1    241                       286    -45      275
  SINCE JUL 1   1455                      1621   -166     1144

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    828                       820      8     1103
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION     W (270)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     W (260)
  AVERAGE WIND SPEED     9.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.4


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    62           800 AM
 LOWEST     43           100 PM
 AVERAGE    53

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


THE ROCKFORD IL CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   35        54      1939
                                             1930
 MINIMUM TEMPERATURE (F)   20       -12      1958


SUNRISE AND SUNSET
DECEMBER  9 2017......SUNRISE   713 AM CST   SUNSET   424 PM CST
DECEMBER 10 2017......SUNRISE   714 AM CST   SUNSET   424 PM CST


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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