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 172244
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
443 PM CST WED DEC 17 2014


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR DECEMBER 17 2014...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         29   1243 AM  60    1977  34     -5       33
  MINIMUM         24    748 AM  -7    1951  20      4       16
  AVERAGE         27                        27      0       25

PRECIPITATION (IN)
  TODAY            0.00          1.28 1921   0.06  -0.06     0.01
  MONTH TO DATE    0.28                      1.39  -1.11     0.70
  SINCE DEC 1      0.28                      1.39  -1.11     0.70
  SINCE JAN 1     38.96                     36.03   2.93    40.85

SNOWFALL (IN)
  TODAY            0.0           4.6  1951   0.3   -0.3      0.2
  MONTH TO DATE    T                         4.1   -4.1      9.3
  SINCE DEC 1      T                         4.1   -4.1      9.3
  SINCE JUL 1      2.9                       5.5   -2.6     10.2

DEGREE DAYS
 HEATING
  TODAY           38                        38      0       40
  MONTH TO DATE  541                       602    -61      712
  SINCE DEC 1    541                       602    -61      712
  SINCE JUL 1   1984                      1858    126     1995

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    799                       843    -44      933
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION     W (290)
  AVERAGE WIND SPEED    12.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    81           300 AM
 LOWEST     63           300 PM
 AVERAGE    72

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   34        62      1877
 MINIMUM TEMPERATURE (F)   20       -11      1983


SUNRISE AND SUNSET
DECEMBER 17 2014......SUNRISE   714 AM CST   SUNSET   422 PM CST
DECEMBER 18 2014......SUNRISE   714 AM CST   SUNSET   422 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.