Climatological Report (Daily)
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CDUS43 KLOT 312136
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
434 PM CDT THU AUG 31 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR AUGUST 31 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         73    127 PM  99    1953  80     -7       76
  MINIMUM         65    147 AM  47    1872  61      4       63
  AVERAGE         69                        70     -1       70

PRECIPITATION (IN)
  TODAY            0.00          1.24 1977   0.14  -0.14     0.00
  MONTH TO DATE    2.51                      4.90  -2.39     4.26
  SINCE JUN 1     13.63                     12.05   1.58    13.34
  SINCE JAN 1     31.74                     25.13   6.61    26.98

SNOWFALL (IN)
  TODAY            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

DEGREE DAYS
 HEATING
  TODAY            0                         1     -1        0
  MONTH TO DATE    5                         4      1        0
  SINCE JUN 1      8                        61    -53       13
  SINCE JUL 1      5                        13     -8        0

 COOLING
  TODAY            4                         6     -2        5
  MONTH TO DATE  214                       238    -24      343
  SINCE JUN 1    750                       686     64      891
  SINCE JAN 1    783                       740     43      965
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION    NE (30)
  HIGHEST GUST SPEED    28   HIGHEST GUST DIRECTION    NE (40)
  AVERAGE WIND SPEED    14.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    84           100 AM
 LOWEST     49           200 PM
 AVERAGE    67

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   80       101      1953
 MINIMUM TEMPERATURE (F)   60        45      1949


SUNRISE AND SUNSET
AUGUST 31 2017........SUNRISE   616 AM CDT   SUNSET   726 PM CDT
SEPTEMBER  1 2017.....SUNRISE   618 AM CDT   SUNSET   725 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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