Climatological Report (Daily)
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000
CDUS43 KLOT 180638
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
137 AM CDT SAT MAR 18 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MARCH 17 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         50    746 PM  82    2012  47      3       56
  MINIMUM         36    912 AM  -1    1900  30      6       40
  AVERAGE         43                        38      5       48

PRECIPITATION (IN)
  YESTERDAY        0.03          1.42 1965   0.08  -0.05     0.00
  MONTH TO DATE    0.88                      1.30  -0.42     1.30
  SINCE MAR 1      0.88                      1.30  -0.42     1.30
  SINCE JAN 1      5.27                      4.82   0.45     3.37

SNOWFALL (IN)
  YESTERDAY        T             4.1  1984   0.2   -0.2      0.0
  MONTH TO DATE    7.8                       3.8    4.0      2.6
  SINCE MAR 1      7.8                       3.8    4.0      2.6
  SINCE JUL 1     26.1                      33.3   -7.2     30.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       22                        27     -5       17
  MONTH TO DATE  493                       504    -11      367
  SINCE MAR 1    493                       504    -11      367
  SINCE JUL 1   4418                      5238   -820     4375

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


WIND (MPH)
  HIGHEST WIND SPEED    28   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    34   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED    10.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           900 AM
 LOWEST     59          1200 AM
 AVERAGE    76

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   47        81      2012
 MINIMUM TEMPERATURE (F)   30         3      1923


SUNRISE AND SUNSET
MARCH 18 2017.........SUNRISE   658 AM CDT   SUNSET   702 PM CDT
MARCH 19 2017.........SUNRISE   656 AM CDT   SUNSET   703 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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