Climatological Report (Daily)
Issued by NWS Chicago, IL

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CDUS43 KLOT 210635
CLIRFD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT MON AUG 21 2017


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

...THE ROCKFORD IL CLIMATE SUMMARY FOR AUGUST 20 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         82    208 PM 100    1947  82      0       78
  MINIMUM         60    452 AM  47    1940  61     -1       61
                                      1897
  AVERAGE         71                        72     -1       70

PRECIPITATION (IN)
  YESTERDAY        T             1.37 1937   0.15  -0.15     0.42
  MONTH TO DATE    0.61                      3.05  -2.44     2.44
  SINCE JUN 1     15.53                     11.65   3.88    12.50
  SINCE JAN 1     34.38                     24.12  10.26    24.06

SNOWFALL (IN)
  YESTERDAY        0.0           0.0    MM   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE JUN 1      0.0                       0.0    0.0      0.0
  SINCE JUL 1      0.0                       0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    1                         0      1        0
  SINCE JUN 1     12                        34    -22        6
  SINCE JUL 1      1                         3     -2        0

 COOLING
  YESTERDAY        6                         7     -1        5
  MONTH TO DATE  124                       154    -30      216
  SINCE JUN 1    625                       603     22      746
  SINCE JAN 1    661                       658      3      831
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION     S (200)
  AVERAGE WIND SPEED     4.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97           100 AM
 LOWEST     58           200 PM
 AVERAGE    78

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


THE ROCKFORD IL CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   82       100      1955
                                             1916
 MINIMUM TEMPERATURE (F)   61        45      1950


SUNRISE AND SUNSET
AUGUST 21 2017........SUNRISE   610 AM CDT   SUNSET   748 PM CDT
AUGUST 22 2017........SUNRISE   612 AM CDT   SUNSET   746 PM CDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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