Climatological Report (Daily)
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000
CDUS43 KLOT 220631
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
131 AM CDT MON MAY 22 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 21 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         65    406 AM  92    1977  72     -7       75
                                      1934
  MINIMUM         51   1159 PM  31    2002  50      1       53
  AVERAGE         58                        61     -3       64

PRECIPITATION (IN)
  YESTERDAY        0.05          1.16 1974   0.13  -0.08     0.00
  MONTH TO DATE    2.24                      2.49  -0.25     3.66
  SINCE MAR 1     12.68                      8.37   4.31     9.80
  SINCE JAN 1     17.07                     11.89   5.18    11.87

SNOWFALL (IN)
  YESTERDAY        0.0           T    2004   0.0    0.0      0.0
                                      1969
  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        7                         6      1        1
  MONTH TO DATE  208                       176     32      225
  SINCE MAR 1   1332                      1509   -177     1407
  SINCE JUL 1   5257                      6243   -986     5415

 COOLING
  YESTERDAY        0                         2     -2        0
  MONTH TO DATE   18                        22     -4        0
  SINCE MAR 1     30                        32     -2        7
  SINCE JAN 1     30                        32     -2        7
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION     W (260)
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION     W (250)
  AVERAGE WIND SPEED    12.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97          1200 AM
 LOWEST     52          1100 AM
 AVERAGE    75

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   72        94      1925
 MINIMUM TEMPERATURE (F)   50        36      2006


SUNRISE AND SUNSET
MAY 22 2017...........SUNRISE   525 AM CDT   SUNSET   812 PM CDT
MAY 23 2017...........SUNRISE   524 AM CDT   SUNSET   813 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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