Climatological Report (Daily)
Issued by NWS Chicago, IL

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467
CDUS43 KLOT 080633
CLIRFD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1232 AM CST FRI DEC 8 2017


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

...THE ROCKFORD IL CLIMATE SUMMARY FOR DECEMBER 7 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         28    128 PM  64    1916  36     -8       26
  MINIMUM         16   1053 PM -11    1977  20     -4       21
  AVERAGE         22                        28     -6       24

PRECIPITATION (IN)
  YESTERDAY        T             1.10 1980   0.07  -0.07      T
  MONTH TO DATE    T                         0.53  -0.53     0.54
  SINCE DEC 1      T                         0.53  -0.53     0.54
  SINCE JAN 1     44.18                     34.79   9.39    33.82

SNOWFALL (IN)
  YESTERDAY        0.2           4.6  1969   0.3   -0.1       T
  MONTH TO DATE    0.2                       2.1   -1.9      5.3
  SINCE DEC 1      0.2                       2.1   -1.9      5.3
  SINCE JUL 1      0.4                       3.9   -3.5      5.3
  SNOW DEPTH       T

DEGREE DAYS
 HEATING
  YESTERDAY       43                        37      6       41
  MONTH TO DATE  202                       249    -47      230
  SINCE DEC 1    202                       249    -47      230
  SINCE JUL 1   1416                      1584   -168     1099

 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    21   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED    11.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    80           500 AM
 LOWEST     42           300 PM
 AVERAGE    61

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


THE ROCKFORD IL CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   35        60      1991
 MINIMUM TEMPERATURE (F)   20        -6      1958


SUNRISE AND SUNSET
DECEMBER  8 2017......SUNRISE   712 AM CST   SUNSET   424 PM CST
DECEMBER  9 2017......SUNRISE   713 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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