Climatological Report (Daily)
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CDUS43 KLOT 282135
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
434 PM CDT THU SEP 28 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR SEPTEMBER 28 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         74    246 PM  92    1953  70      4       60
  MINIMUM         53    553 AM  29    1942  49      4       50
  AVERAGE         64                        59      5       55

PRECIPITATION (IN)
  TODAY            0.00          3.65 1972   0.09  -0.09     0.31
  MONTH TO DATE    0.32                      3.02  -2.70     1.46
  SINCE SEP 1      0.32                      3.02  -2.70     1.46
  SINCE JAN 1     32.06                     28.15   3.91    28.44

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 SEP 1      0.0                       0.0    0.0      0.0
  SINCE JUL 1      T                         0.0    0.0      0.0

DEGREE DAYS
 HEATING
  TODAY            1                         7     -6       10
  MONTH TO DATE   31                        91    -60       17
  SINCE SEP 1     31                        91    -60       17
  SINCE JUL 1     36                       104    -68       17

 COOLING
  TODAY            0                         1     -1        0
  MONTH TO DATE  179                        90     89      165
  SINCE SEP 1    179                        90     89      165
  SINCE JAN 1    962                       830    132     1130
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     N (340)
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION    NW (330)
  AVERAGE WIND SPEED     7.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    71           200 AM
 LOWEST     35           200 PM
 AVERAGE    53

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   69        99      1953
 MINIMUM TEMPERATURE (F)   48        32      1984


SUNRISE AND SUNSET
SEPTEMBER 28 2017.....SUNRISE   646 AM CDT   SUNSET   638 PM CDT
SEPTEMBER 29 2017.....SUNRISE   647 AM CDT   SUNSET   636 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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