Climatological Report (Daily)
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141
CDUS43 KLOT 190640
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
139 AM CDT THU APR 19 2018


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 18 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         37   1011 AM  89    2002  60    -23       76
  MINIMUM         30    447 AM  23    1983  40    -10       41
                                      1875
  AVERAGE         34                        50    -16       59

PRECIPITATION (IN)
  YESTERDAY        0.41          3.83 1975   0.11   0.30     0.00
  MONTH TO DATE    2.69                      1.98   0.71     2.79
  SINCE MAR 1      4.43                      4.48  -0.05     6.80
  SINCE JAN 1     10.61                      8.00   2.61    11.19

SNOWFALL (IN)
  YESTERDAY        0.4           0.6  2011   0.1    0.3      0.0
  MONTH TO DATE    3.1                       1.1    2.0      0.0
  SINCE MAR 1      5.7                       6.7   -1.0      7.8
  SINCE JUL 1     36.0                      36.2   -0.2     26.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       31                        16     15        6
  MONTH TO DATE  516                       334    182      208
  SINCE MAR 1   1383                      1175    208      993
  SINCE JUL 1   5841                      5909    -68     4918

 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    25   HIGHEST WIND DIRECTION     E (80)
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION     E (80)
  AVERAGE WIND SPEED    11.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           800 PM
 LOWEST     64          1000 AM
 AVERAGE    82

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   61        86      1985
 MINIMUM TEMPERATURE (F)   40        22      1983


SUNRISE AND SUNSET
APRIL 19 2018.........SUNRISE   605 AM CDT   SUNSET   737 PM CDT
APRIL 20 2018.........SUNRISE   603 AM CDT   SUNSET   738 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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