Climatological Report (Daily)
Issued by NWS Grand Rapids, MI

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CDUS43 KGRR 180522
CLIGRR


CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
1222 AM EST MON DEC 18 2017


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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR DECEMBER 17 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1892 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         31    537 PM  54    2006  34     -3       25
  MINIMUM         21    327 AM  -5    1973  23     -2       15
  AVERAGE         26                        28     -2       20

PRECIPITATION (IN)
  YESTERDAY        0.00          1.37 1921   0.07  -0.07     0.13
  MONTH TO DATE    1.17                      1.44  -0.27     2.30
  SINCE DEC 1      1.17                      1.44  -0.27     2.30
  SINCE JAN 1     38.64                     37.21   1.43    45.63

SNOWFALL (IN)
  YESTERDAY        0.0           5.4  1951   0.8   -0.8      1.2
  MONTH TO DATE   18.2                      11.0    7.2     32.9
  SINCE DEC 1     18.2                      11.0    7.2     32.9
  SINCE JUL 1     18.8                      18.3    0.5     33.7
  SNOW DEPTH       7

DEGREE DAYS
 HEATING
  YESTERDAY       39                        36      3       45
  MONTH TO DATE  603                       576     27      653
  SINCE DEC 1    603                       576     27      653
  SINCE JUL 1   1794                      1914   -120     1601

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    719                       699     20      936
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  10   RESULTANT WIND DIRECTION   E (90)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     E (90)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     E (90)
  AVERAGE WIND SPEED     9.9


SKY COVER
  POSSIBLE SUNSHINE   0 PERCENT
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           800 AM
 LOWEST     84           500 AM
 AVERAGE    92

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


THE GRAND RAPIDS MI CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   34        55      1939
 MINIMUM TEMPERATURE (F)   23        -5      1926


SUNRISE AND SUNSET
DECEMBER 18 2017......SUNRISE   808 AM EST   SUNSET   510 PM EST
DECEMBER 19 2017......SUNRISE   809 AM EST   SUNSET   510 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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