Climatological Report (Daily)
Issued by NWS Chicago, IL

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CDUS43 KLOT 180645
CLIRFD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1244 AM CST THU DEC 18 2014


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

...THE ROCKFORD IL CLIMATE SUMMARY FOR DECEMBER 17 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1905 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         26   1240 PM  50    2006  32     -6       34
                                      1977
                                      1941
  MINIMUM         23   1159 PM -12    1945  17      6       16
  AVERAGE         25                        25      0       25

PRECIPITATION (IN)
  YESTERDAY        T             0.80 1921   0.06  -0.06     0.01
  MONTH TO DATE    0.43                      1.21  -0.78     0.57
  SINCE DEC 1      0.43                      1.21  -0.78     0.57
  SINCE JAN 1     33.00                     35.47  -2.47    39.45

SNOWFALL (IN)
  YESTERDAY        T             3.8  1951   0.4   -0.4      0.1
  MONTH TO DATE    T                         5.9   -5.9      7.5
  SINCE DEC 1      T                         5.9   -5.9      7.5
  SINCE JUL 1      3.6                       7.7   -4.1      8.5
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       40                        40      0       40
  MONTH TO DATE  571                       638    -67      766
  SINCE DEC 1    571                       638    -67      766
  SINCE JUL 1   2118                      1973    145     2149

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    729                       820    -91      890
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     W (290)
  AVERAGE WIND SPEED    10.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    74           500 AM
 LOWEST     68           600 AM
 AVERAGE    71

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


THE ROCKFORD IL CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        55      1941
 MINIMUM TEMPERATURE (F)   17       -17      1983


SUNRISE AND SUNSET
DECEMBER 18 2014......SUNRISE   720 AM CST   SUNSET   426 PM CST
DECEMBER 19 2014......SUNRISE   721 AM CST   SUNSET   426 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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