Climatological Report (Daily)
Issued by NWS Chicago, IL

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000
CDUS43 KLOT 182241
CLIRFD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
438 PM CST MON DEC 18 2017


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

...THE ROCKFORD IL CLIMATE SUMMARY FOR DECEMBER 18 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         43    302 PM  55    1941  32     11       13
  MINIMUM         35   1021 AM -17    1983  17     18      -11
  AVERAGE         39                        24     15        1

PRECIPITATION (IN)
  TODAY            0.01          1.04 1957   0.06  -0.05     0.02
  MONTH TO DATE    0.13                      1.27  -1.14     1.40
  SINCE DEC 1      0.13                      1.27  -1.14     1.40
  SINCE JAN 1     44.31                     35.53   8.78    34.68

SNOWFALL (IN)
  TODAY            0.0           2.4  2000   0.4   -0.4      0.3
  MONTH TO DATE    1.5                       6.3   -4.8     15.3
  SINCE DEC 1      1.5                       6.3   -4.8     15.3
  SINCE JUL 1      1.7                       8.1   -6.4     15.3

DEGREE DAYS
 HEATING
  TODAY           26                        41    -15       64
  MONTH TO DATE  600                       679    -79      791
  SINCE DEC 1    600                       679    -79      791
  SINCE JUL 1   1814                      2014   -200     1660

 COOLING
  TODAY            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    17   HIGHEST WIND DIRECTION     W (260)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     W (260)
  AVERAGE WIND SPEED     9.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN
  FOG
  FOG W/VISIBILITY <= 1/4 MILE
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           100 AM
 LOWEST     62           200 PM
 AVERAGE    81

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


THE ROCKFORD IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        56      1988
 MINIMUM TEMPERATURE (F)   16       -21      1983


SUNRISE AND SUNSET
DECEMBER 18 2017......SUNRISE   720 AM CST   SUNSET   426 PM CST
DECEMBER 19 2017......SUNRISE   721 AM CST   SUNSET   427 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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