Climatological Report (Daily)
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429
CDUS43 KLOT 120635
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1235 AM CST SUN MAR 12 2017


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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MARCH 11 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         32    259 PM  74    1990  45    -13       55
  MINIMUM         18    634 AM   3    1979  28    -10       34
  AVERAGE         25                        36    -11       45

PRECIPITATION (IN)
  YESTERDAY        0.00          0.92 1957   0.08  -0.08     0.00
  MONTH TO DATE    0.37                      0.85  -0.48     0.45
  SINCE MAR 1      0.37                      0.85  -0.48     0.45
  SINCE JAN 1      4.76                      4.37   0.39     2.52

SNOWFALL (IN)
  YESTERDAY        0.0           4.4  1941   0.2   -0.2      0.0
  MONTH TO DATE    0.1                       2.6   -2.5      2.6
  SINCE MAR 1      0.1                       2.6   -2.5      2.6
  SINCE JUL 1     18.4                      32.1  -13.7     30.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       40                        29     11       20
  MONTH TO DATE  281                       338    -57      269
  SINCE MAR 1    281                       338    -57      269
  SINCE JUL 1   4206                      5072   -866     4277

 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    17   HIGHEST WIND DIRECTION     N (340)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION    NE (30)
  AVERAGE WIND SPEED     8.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    39           600 AM
 LOWEST     19           200 PM
 AVERAGE    29

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


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   45        81      1990
 MINIMUM TEMPERATURE (F)   28         1      1948


SUNRISE AND SUNSET
MARCH 12 2017.........SUNRISE   708 AM CDT   SUNSET   655 PM CDT
MARCH 13 2017.........SUNRISE   706 AM CDT   SUNSET   656 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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