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

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CDUS43 KDTX 170541
CLIDTW


CLIMATE REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1241 AM EST SUN DEC 17 2017


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

...THE DETROIT MI CLIMATE SUMMARY FOR DECEMBER 16 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         38   1154 AM  65    1984  36      2       22
  MINIMUM         26   1159 PM  -3    1951  24      2        5
                                      1876
  AVERAGE         32                        30      2       14

PRECIPITATION (IN)
  YESTERDAY        0.02          0.85 1940   0.07  -0.05     0.12
  MONTH TO DATE    0.90                      1.30  -0.40     1.20
  SINCE DEC 1      0.90                      1.30  -0.40     1.20
  SINCE JAN 1     34.88                     32.31   2.57    33.78

SNOWFALL (IN)
  YESTERDAY        0.7           7.4  2007   0.3    0.4      1.9
  MONTH TO DATE   13.6                       4.2    9.4     15.1
  SINCE DEC 1     13.6                       4.2    9.4     15.1
  SINCE JUL 1     13.6                       5.8    7.8     15.2
  SNOW DEPTH       7

DEGREE DAYS
 HEATING
  YESTERDAY       33                        35     -2       51
  MONTH TO DATE  534                       524     10      587
  SINCE DEC 1    534                       524     10      587
  SINCE JUL 1   1597                      1739   -142     1455

 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    17   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION    SW (220)
  AVERAGE WIND SPEED     9.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    78           300 AM
 LOWEST     64           900 AM
 AVERAGE    71

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


THE DETROIT MI CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   35        56      1984
 MINIMUM TEMPERATURE (F)   24        -7      1989


SUNRISE AND SUNSET
DECEMBER 17 2017......SUNRISE   757 AM EST   SUNSET   503 PM EST
DECEMBER 18 2017......SUNRISE   757 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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