Climatological Report (Daily)
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768
CDUS43 KLOT 200636
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
135 AM CDT SUN MAY 20 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 19 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         69    334 PM  94    1977  71     -2       50
                                      1975
  MINIMUM         54    534 AM  36    1993  49      5       43
                                      1894
  AVERAGE         62                        60      2       47

PRECIPITATION (IN)
  YESTERDAY        0.02          1.53 1949   0.12  -0.10     0.23
  MONTH TO DATE    5.08                      2.24   2.84     1.85
  SINCE MAR 1      9.54                      8.12   1.42    12.29
  SINCE JAN 1     15.72                     11.64   4.08    16.68

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        3                         6     -3       18
  MONTH TO DATE   78                       164    -86      192
  SINCE MAR 1   1650                      1497    153     1316
  SINCE JUL 1   6108                      6231   -123     5241

 COOLING
  YESTERDAY        0                         2     -2        0
  MONTH TO DATE   37                        18     19       18
  SINCE MAR 1     37                        28      9       30
  SINCE JAN 1     37                        28      9       30
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NE (30)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION    NE (40)
  AVERAGE WIND SPEED     5.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           100 AM
 LOWEST     68           500 PM
 AVERAGE    81

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   71        95      1977
 MINIMUM TEMPERATURE (F)   49        33      2002


SUNRISE AND SUNSET
MAY 20 2018...........SUNRISE   527 AM CDT   SUNSET   810 PM CDT
MAY 21 2018...........SUNRISE   526 AM CDT   SUNSET   811 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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