Climatological Report (Daily)
Issued by NWS Chicago, IL

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CDUS43 KLOT 180634
CLIRFD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1233 AM CST SUN FEB 18 2018


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

...THE ROCKFORD IL CLIMATE SUMMARY FOR FEBRUARY 17 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1905 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         31    347 PM  66    2017  35     -4       66
  MINIMUM         11    333 AM -13    1958  18     -7       28
  AVERAGE         21                        26     -5       47

PRECIPITATION (IN)
  YESTERDAY        0.11          1.15 2008   0.05   0.06     0.00
  MONTH TO DATE    1.39                      0.77   0.62     0.33
  SINCE DEC 1      3.22                      4.12  -0.90     4.46
  SINCE JAN 1      2.73                      2.14   0.59     2.58

SNOWFALL (IN)
  YESTERDAY        1.3           5.5  1944   0.3    0.0      0.0
  MONTH TO DATE   17.4                       5.0   12.4       T
  SINCE DEC 1     28.1                      26.5    1.6     16.8
  SINCE JUL 1     28.3                      28.3    0.0     16.8
  SNOW DEPTH       2

DEGREE DAYS
 HEATING
  YESTERDAY       44                        39      5       18
  MONTH TO DATE  821                       694    127      567
  SINCE DEC 1   3419                      3268    151     2990
  SINCE JUL 1   4633                      4603     30     3859

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1      0                         0      0        0
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     W (290)
  AVERAGE WIND SPEED     7.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  SNOW
  LIGHT SNOW
  FOG
  FOG W/VISIBILITY <= 1/4 MILE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           400 PM
 LOWEST     62          1000 AM
 AVERAGE    77

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


THE ROCKFORD IL CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   35        68      2017
 MINIMUM TEMPERATURE (F)   19       -19      1936


SUNRISE AND SUNSET
FEBRUARY 18 2018......SUNRISE   648 AM CST   SUNSET   533 PM CST
FEBRUARY 19 2018......SUNRISE   647 AM CST   SUNSET   534 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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