Climatological Report (Daily)
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CDUS43 KLOT 220632
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT TUE AUG 22 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 21 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         87    321 PM  99    1955  82      5       76
  MINIMUM         71    552 AM  46    1950  63      8       58
  AVERAGE         79                        72      7       67

PRECIPITATION (IN)
  YESTERDAY        0.03          2.00 1874   0.15  -0.12     0.00
  MONTH TO DATE    2.08                      3.45  -1.37     2.34
  SINCE JUN 1     13.20                     10.60   2.60    11.42
  SINCE JAN 1     31.31                     23.68   7.63    25.06

SNOWFALL (IN)
  YESTERDAY        0.0           0.0    MM   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE JUN 1      T                         0.0    0.0      0.0
  SINCE JUL 1      T                         0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    3                         0      3        0
  SINCE JUN 1      6                        52    -46       13
  SINCE JUL 1      3                         4     -1        0

 COOLING
  YESTERDAY       14                         7      7        2
  MONTH TO DATE  172                       173     -1      250
  SINCE JUN 1    708                       621     87      798
  SINCE JAN 1    741                       675     66      872
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION    SW (230)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION    SW (240)
  AVERAGE WIND SPEED     8.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM
  LIGHT RAIN
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    90           600 AM
 LOWEST     51           400 PM
 AVERAGE    71

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   82        99      1936
 MINIMUM TEMPERATURE (F)   63        49      2004


SUNRISE AND SUNSET
AUGUST 22 2017........SUNRISE   607 AM CDT   SUNSET   741 PM CDT
AUGUST 23 2017........SUNRISE   608 AM CDT   SUNSET   739 PM CDT


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




$$




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