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112
CDUS43 KLOT 170633
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT TUE APR 17 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 16 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         35    430 PM  87    2002  59    -24       73
  MINIMUM         27    432 AM  18    1875  39    -12       52
  AVERAGE         31                        49    -18       63

PRECIPITATION (IN)
  YESTERDAY        0.01          1.97 1921   0.11  -0.10     0.59
  MONTH TO DATE    2.28                      1.75   0.53     2.79
  SINCE MAR 1      4.02                      4.25  -0.23     6.80
  SINCE JAN 1     10.20                      7.77   2.43    11.19

SNOWFALL (IN)
  YESTERDAY        0.3           5.4  1961   0.0    0.3      0.0
  MONTH TO DATE    2.7                       1.0    1.7      0.0
  SINCE MAR 1      5.3                       6.6   -1.3      7.8
  SINCE JUL 1     35.6                      36.1   -0.5     26.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       34                        16     18        2
  MONTH TO DATE  456                       302    154      194
  SINCE MAR 1   1323                      1143    180      979
  SINCE JUL 1   5781                      5877    -96     4904

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        9
  SINCE MAR 1      0                         1     -1        9
  SINCE JAN 1      0                         1     -1        9
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    24   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    31   HIGHEST GUST DIRECTION    NW (300)
  AVERAGE WIND SPEED    15.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    85          1200 AM
 LOWEST     61          1000 PM
 AVERAGE    73

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   60        88      1976
 MINIMUM TEMPERATURE (F)   39        17      1875


SUNRISE AND SUNSET
APRIL 17 2018.........SUNRISE   608 AM CDT   SUNSET   735 PM CDT
APRIL 18 2018.........SUNRISE   606 AM CDT   SUNSET   736 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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