Climatological Report (Daily)
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000
CDUS43 KLOT 170634
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT THU MAY 17 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 16 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         79    420 PM  94    1962  70      9       87
  MINIMUM         47    351 AM  33    1997  48     -1       61
  AVERAGE         63                        59      4       74

PRECIPITATION (IN)
  YESTERDAY        0.00          1.38 1974   0.12  -0.12     0.00
  MONTH TO DATE    4.96                      1.87   3.09     1.25
  SINCE MAR 1      9.42                      7.75   1.67    11.69
  SINCE JAN 1     15.60                     11.27   4.33    16.08

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 MAR 1      5.8                       6.8   -1.0      7.8
  SINCE JUL 1     36.1                      36.3   -0.2     26.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        2                         7     -5        0
  MONTH TO DATE   65                       144    -79      172
  SINCE MAR 1   1637                      1477    160     1296
  SINCE JUL 1   6095                      6211   -116     5221

 COOLING
  YESTERDAY        0                         1     -1        9
  MONTH TO DATE   37                        14     23       10
  SINCE MAR 1     37                        24     13       22
  SINCE JAN 1     37                        24     13       22
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    NE (60)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION     E (70)
  AVERAGE WIND SPEED     5.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    76           400 AM
 LOWEST     28           400 PM
 AVERAGE    52

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   70        94      1962
 MINIMUM TEMPERATURE (F)   49        36      2002
                                             1973


SUNRISE AND SUNSET
MAY 17 2018...........SUNRISE   529 AM CDT   SUNSET   807 PM CDT
MAY 18 2018...........SUNRISE   528 AM CDT   SUNSET   808 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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