Climatological Report (Daily)
Issued by NWS Chicago, IL

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CDUS43 KLOT 132247
CLIRFD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
444 PM CST WED DEC 13 2017


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

...THE ROCKFORD IL CLIMATE SUMMARY FOR DECEMBER 13 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         37    209 PM  62    2015  34      3       15
  MINIMUM         22    351 AM -14    1958  18      4       -2
  AVERAGE         30                        26      4        7

PRECIPITATION (IN)
  TODAY            T             1.41 2015   0.07  -0.07      T
  MONTH TO DATE    0.11                      0.96  -0.85     1.06
  SINCE DEC 1      0.11                      0.96  -0.85     1.06
  SINCE JAN 1     44.29                     35.22   9.07    34.34

SNOWFALL (IN)
  TODAY           MM             6.6  1973   0.4   MM         T
  MONTH TO DATE    1.5                       4.3   -2.8     11.6
  SINCE DEC 1      1.5                       4.3   -2.8     11.6
  SINCE JUL 1      1.7                       6.1   -4.4     11.6

DEGREE DAYS
 HEATING
  TODAY           35                        39     -4       58
  MONTH TO DATE  436                       478    -42      507
  SINCE DEC 1    436                       478    -42      507
  SINCE JUL 1   1650                      1813   -163     1376

 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    28   HIGHEST WIND DIRECTION    NW (330)
  HIGHEST GUST SPEED    36   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED    14.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT SNOW


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    75           800 AM
 LOWEST     62           300 AM
 AVERAGE    69

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


THE ROCKFORD IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   33        61      2015
 MINIMUM TEMPERATURE (F)   18       -11      1989
                                             1985
                                             1919


SUNRISE AND SUNSET
DECEMBER 13 2017......SUNRISE   717 AM CST   SUNSET   425 PM CST
DECEMBER 14 2017......SUNRISE   717 AM CST   SUNSET   425 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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