Climatological Report (Daily)
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561
CDUS43 KLOT 191115
CLIORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT FRI MAY 19 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 18 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         78    316 PM  93    1962  71      7       65
  MINIMUM         48   1159 PM  34    2002  49     -1       41
  AVERAGE         63                        60      3       53

PRECIPITATION (IN)
  YESTERDAY        0.00          1.36 1926   0.13  -0.13     0.00
  MONTH TO DATE    1.62                      2.12  -0.50     3.66
  SINCE MAR 1     12.06                      8.00   4.06     9.80
  SINCE JAN 1     16.45                     11.52   4.93    11.87

SNOWFALL (IN)
  YESTERDAY        0.0           T    1894   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE MAR 1      7.8                       6.8    1.0      3.7
  SINCE JUL 1     26.1                      36.3  -10.2     31.2
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        2                         7     -5       12
  MONTH TO DATE  174                       158     16      204
  SINCE MAR 1   1298                      1491   -193     1386
  SINCE JUL 1   5223                      6225  -1002     5394

 COOLING
  YESTERDAY        0                         1     -1        0
  MONTH TO DATE   18                        16      2        0
  SINCE MAR 1     30                        26      4        7
  SINCE JAN 1     30                        26      4        7
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    35   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    47   HIGHEST GUST DIRECTION    SW (230)
  AVERAGE WIND SPEED    18.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.4


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    81           100 AM
 LOWEST     46           500 PM
 AVERAGE    64

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   71        94      1977
                                             1975
 MINIMUM TEMPERATURE (F)   49        36      1993
                                             1894


SUNRISE AND SUNSET
MAY 19 2017...........SUNRISE   527 AM CDT   SUNSET   809 PM CDT
MAY 20 2017...........SUNRISE   526 AM CDT   SUNSET   810 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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