Climatological Report (Daily)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

097
CDUS43 KLOT 182139
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
439 PM CDT THU MAY 18 2017


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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR MAY 18 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         78    242 PM  93    1962  71      7       65
  MINIMUM         65   1245 AM  34    2002  49     16       41
  AVERAGE         72                        60     12       53

PRECIPITATION (IN)
  TODAY            0.00          1.36 1926   0.13  -0.13     0.00
  MONTH TO DATE    1.62                      2.12  -0.50     3.66
  SINCE MAR 1     12.06                      8.00   4.06     9.80
  SINCE JAN 1     16.45                     11.52   4.93    11.87

SNOWFALL (IN)
  TODAY            0.0           T    1894   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE MAR 1      7.8                       6.8    1.0      3.7
  SINCE JUL 1     26.1                      36.3  -10.2     31.2

DEGREE DAYS
 HEATING
  TODAY            0                         7     -7       12
  MONTH TO DATE  172                       158     14      204
  SINCE MAR 1   1296                      1491   -195     1386
  SINCE JUL 1   5221                      6225  -1004     5394

 COOLING
  TODAY            7                         1      6        0
  MONTH TO DATE   25                        16      9        0
  SINCE MAR 1     37                        26     11        7
  SINCE JAN 1     37                        26     11        7
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    35   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    47   HIGHEST GUST DIRECTION    SW (230)
  AVERAGE WIND SPEED    19.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  THUNDERSTORM


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    81           100 AM
 LOWEST     47           200 PM
 AVERAGE    64

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


THE CHICAGO-OHARE IL CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   71        94      1977
                                             1975
 MINIMUM TEMPERATURE (F)   49        36      1993
                                             1894


SUNRISE AND SUNSET
MAY 18 2017...........SUNRISE   528 AM CDT   SUNSET   808 PM CDT
MAY 19 2017...........SUNRISE   527 AM CDT   SUNSET   809 PM CDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




$$





USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.