Climatological Report (Daily)
Issued by NWS Chicago, IL

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
CDUS43 KLOT 170631
CLIRFD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1231 AM CST SUN DEC 17 2017


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

...THE ROCKFORD IL CLIMATE SUMMARY FOR DECEMBER 16 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         47    234 PM  58    1984  33     14       19
  MINIMUM         28   1159 PM -14    1932  17     11        7
  AVERAGE         38                        25     13       13

PRECIPITATION (IN)
  YESTERDAY        0.00          1.12 1921   0.06  -0.06     0.19
  MONTH TO DATE    0.11                      1.15  -1.04     1.25
  SINCE DEC 1      0.11                      1.15  -1.04     1.25
  SINCE JAN 1     44.29                     35.41   8.88    34.53

SNOWFALL (IN)
  YESTERDAY        0.0           3.6  2008   0.4   -0.4      1.4
  MONTH TO DATE    1.5                       5.5   -4.0     13.0
  SINCE DEC 1      1.5                       5.5   -4.0     13.0
  SINCE JUL 1      1.7                       7.3   -5.6     13.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       27                        40    -13       52
  MONTH TO DATE  543                       598    -55      679
  SINCE DEC 1    543                       598    -55      679
  SINCE JUL 1   1757                      1933   -176     1548

 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    15   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION    SW (220)
  AVERAGE WIND SPEED     6.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92          1100 PM
 LOWEST     49           100 PM
 AVERAGE    71

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


THE ROCKFORD IL CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        50      2006
                                             1977
                                             1941
 MINIMUM TEMPERATURE (F)   17       -12      1945


SUNRISE AND SUNSET
DECEMBER 17 2017......SUNRISE   720 AM CST   SUNSET   426 PM CST
DECEMBER 18 2017......SUNRISE   720 AM CST   SUNSET   426 PM CST


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




$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.