Climatological Report (Daily)
Issued by NWS Chicago, IL

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000
CDUS43 KLOT 120632
CLIRFD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1232 AM CST TUE DEC 12 2017


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

...THE ROCKFORD IL CLIMATE SUMMARY FOR DECEMBER 11 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         38    153 PM  61    1949  34      4       32
  MINIMUM         18    137 AM -18    1972  19     -1       23
  AVERAGE         28                        26      2       28

PRECIPITATION (IN)
  YESTERDAY        0.09          0.92 1996   0.08   0.01     0.43
  MONTH TO DATE    0.11                      0.83  -0.72     1.06
  SINCE DEC 1      0.11                      0.83  -0.72     1.06
  SINCE JAN 1     44.29                     35.09   9.20    34.34

SNOWFALL (IN)
  YESTERDAY        1.1           8.3  2000   0.3    0.8      4.3
  MONTH TO DATE    1.5                       3.5   -2.0     11.6
  SINCE DEC 1      1.5                       3.5   -2.0     11.6
  SINCE JUL 1      1.7                       5.3   -3.6     11.6
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       37                        38     -1       37
  MONTH TO DATE  357                       400    -43      402
  SINCE DEC 1    357                       400    -43      402
  SINCE JUL 1   1571                      1735   -164     1271

 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    29   HIGHEST WIND DIRECTION     N (350)
  HIGHEST GUST SPEED    36   HIGHEST GUST DIRECTION     N (340)
  AVERAGE WIND SPEED     9.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           400 AM
 LOWEST     63          1100 PM
 AVERAGE    78

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


THE ROCKFORD IL CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   34        60      1991
 MINIMUM TEMPERATURE (F)   19        -9      2000


SUNRISE AND SUNSET
DECEMBER 12 2017......SUNRISE   716 AM CST   SUNSET   425 PM CST
DECEMBER 13 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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