Climatological Report (Daily)
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000
CDUS43 KLOT 211121
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
620 AM CDT TUE APR 21 2015


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 20 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2015


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         52    522 AM  87    1985  61     -9       79
  MINIMUM         41   1155 PM  24    1897  40      1       41
  AVERAGE         47                        51     -4       60

PRECIPITATION (IN)
  YESTERDAY        0.01          2.37 2000   0.11  -0.10     0.00
  MONTH TO DATE    2.55                      2.21   0.34     1.28
  SINCE MAR 1      3.65                      4.71  -1.06     2.99
  SINCE JAN 1      6.51                      8.23  -1.72     8.29

SNOWFALL (IN)
  YESTERDAY        0.0           0.2  1943   0.0    0.0      0.0
  MONTH TO DATE    0.0                       1.1   -1.1      1.4
  SINCE MAR 1      7.1                       6.7    0.4     13.7
  SINCE JUL 1     50.7                      36.5   14.2     82.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       18                        15      3        5
  MONTH TO DATE  262                       364   -102      355
  SINCE MAR 1   1172                      1205    -33     1380
  SINCE JUL 1   6352                      5939    413     6795

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE MAR 1      0                         1     -1        0
  SINCE JAN 1      0                         1     -1        0
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    29   HIGHEST WIND DIRECTION     W (270)
  HIGHEST GUST SPEED    37   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED    16.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           100 AM
 LOWEST     53           600 PM
 AVERAGE    77

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   61        88      1985
 MINIMUM TEMPERATURE (F)   41        27      1986


SUNRISE AND SUNSET
APRIL 21 2015.........SUNRISE   602 AM CDT   SUNSET   739 PM CDT
APRIL 22 2015.........SUNRISE   601 AM CDT   SUNSET   740 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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