Climatological Report (Daily)
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CDUS43 KLOT 200636
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1236 AM CST MON NOV 20 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR NOVEMBER 19 2017...

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)
 YESTERDAY
  MAXIMUM         37   1238 AM  75    1930  46     -9       39
  MINIMUM         30   1159 PM  10    1894  31     -1       28
  AVERAGE         34                        39     -5       34

PRECIPITATION (IN)
  YESTERDAY        0.00          0.96 1985   0.11  -0.11     0.01
  MONTH TO DATE    1.73                      1.99  -0.26     0.42
  SINCE SEP 1     10.75                      8.35   2.40     5.95
  SINCE JAN 1     42.49                     33.48   9.01    32.93

SNOWFALL (IN)
  YESTERDAY        0.0           2.2  1955   0.0    0.0       T
  MONTH TO DATE    0.1                       0.3   -0.2       T
  SINCE SEP 1      0.1                       0.5   -0.4       T
  SINCE JUL 1      0.1                       0.5   -0.4       T
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       31                        26      5       31
  MONTH TO DATE  494                       417     77      251
  SINCE SEP 1    782                       919   -137      540
  SINCE JUL 1    787                       932   -145      540

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        3
  SINCE SEP 1    208                       103    105      192
  SINCE JAN 1    991                       843    148     1157
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION    NW (310)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED    13.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    69           800 PM
 LOWEST     44           200 PM
 AVERAGE    57

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   46        68      1930
                                             1913
 MINIMUM TEMPERATURE (F)   31         8      1873


SUNRISE AND SUNSET
NOVEMBER 20 2017......SUNRISE   648 AM CST   SUNSET   426 PM CST
NOVEMBER 21 2017......SUNRISE   649 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.




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