Climatological Report (Daily)
Issued by NWS Detroit/Pontiac, MI

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273
CDUS43 KDTX 180605
CLIDTW


CLIMATE REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
105 AM EST MON DEC 18 2017


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

...THE DETROIT MI CLIMATE SUMMARY FOR DECEMBER 17 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1874 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         37    449 PM  56    1984  35      2       28
  MINIMUM         25    124 AM  -7    1989  24      1       20
  AVERAGE         31                        29      2       24

PRECIPITATION (IN)
  YESTERDAY        0.00          0.85 1996   0.08  -0.08     0.13
                                      1928
  MONTH TO DATE    0.90                      1.38  -0.48     1.33
  SINCE DEC 1      0.90                      1.38  -0.48     1.33
  SINCE JAN 1     34.88                     32.39   2.49    33.91

SNOWFALL (IN)
  YESTERDAY        0.0           2.4  2000   0.3   -0.3      1.4
  MONTH TO DATE   13.6                       4.5    9.1     16.5
  SINCE DEC 1     13.6                       4.5    9.1     16.5
  SINCE JUL 1     13.6                       6.1    7.5     16.6
  SNOW DEPTH       6

DEGREE DAYS
 HEATING
  YESTERDAY       34                        36     -2       41
  MONTH TO DATE  568                       560      8      628
  SINCE DEC 1    568                       560      8      628
  SINCE JUL 1   1631                      1775   -144     1496

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    918                       803    115     1177
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     E (70)
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION     E (70)
  AVERAGE WIND SPEED     6.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    89          1000 PM
 LOWEST     68           200 AM
 AVERAGE    79

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


THE DETROIT MI CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   35        54      1939
 MINIMUM TEMPERATURE (F)   23        -3      1989


SUNRISE AND SUNSET
DECEMBER 18 2017......SUNRISE   757 AM EST   SUNSET   503 PM EST
DECEMBER 19 2017......SUNRISE   758 AM EST   SUNSET   503 PM EST


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




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