Climatological Report (Daily)
Issued by NWS

Home | Current Version | Previous Version | Graphics & Text | 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 112233
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
433 PM CST MON DEC 11 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR DECEMBER 11 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         39    247 PM  61    1949  36      3       33
  MINIMUM         23    252 AM  -5    1972  22      1       23
  AVERAGE         31                        29      2       28

PRECIPITATION (IN)
  TODAY            T             1.73 1949   0.09  -0.09     0.44
  MONTH TO DATE    0.20                      0.97  -0.77     1.07
  SINCE DEC 1      0.20                      0.97  -0.77     1.07
  SINCE JAN 1     42.71                     35.61   7.10    35.27

SNOWFALL (IN)
  TODAY            T             9.5  2000   0.2   -0.2      5.1
  MONTH TO DATE    0.6                       2.4   -1.8     14.2
  SINCE DEC 1      0.6                       2.4   -1.8     14.2
  SINCE JUL 1      0.7                       3.8   -3.1     14.2

DEGREE DAYS
 HEATING
  TODAY           34                        36     -2       37
  MONTH TO DATE  327                       378    -51      395
  SINCE DEC 1    327                       378    -51      395
  SINCE JUL 1   1370                      1634   -264     1224

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    991                       843    148     1157
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     S (170)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION    SE (150)
  AVERAGE WIND SPEED     6.9


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           400 AM
 LOWEST     59           100 PM
 AVERAGE    67

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   35        61      1877
 MINIMUM TEMPERATURE (F)   21        -8      2000


SUNRISE AND SUNSET
DECEMBER 11 2017......SUNRISE   710 AM CST   SUNSET   420 PM CST
DECEMBER 12 2017......SUNRISE   710 AM CST   SUNSET   420 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.