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

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000
CDUS43 KGRR 181501
CLIGRR


CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
1000 AM EST MON DEC 18 2017


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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR DECEMBER 18 2017...
VALID AS OF 0900 AM LOCAL TIME.

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)
 TODAY
  MAXIMUM         38    852 AM  55    1939  34      4       21
  MINIMUM         29   1222 AM  -5    1926  23      6       12
  AVERAGE         34                        28      6       17

PRECIPITATION (IN)
  TODAY            0.02          1.03 2002   0.07  -0.05     0.04
  MONTH TO DATE    1.19                      1.51  -0.32     2.34
  SINCE DEC 1      1.19                      1.51  -0.32     2.34
  SINCE JAN 1     38.66                     37.28   1.38    45.67

SNOWFALL (IN)
  TODAY            0.0           4.0  1951   0.8   -0.8      1.5
  MONTH TO DATE   18.2                      11.8    6.4     34.4
  SINCE DEC 1     18.2                      11.8    6.4     34.4
  SINCE JUL 1     18.8                      19.1   -0.3     35.2
  SNOW DEPTH       7

DEGREE DAYS
 HEATING
  TODAY           31                        37     -6       48
  MONTH TO DATE  634                       613     21      701
  SINCE DEC 1    634                       613     21      701
  SINCE JUL 1   1825                      1951   -126     1649

 COOLING
  TODAY            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   6   RESULTANT WIND DIRECTION  SW (210)
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED     6.1


SKY COVER
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           500 AM
 LOWEST     89           100 AM
 AVERAGE    95

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


THE GRAND RAPIDS MI CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   34        55      1895
 MINIMUM TEMPERATURE (F)   23       -18      1983


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.




$$

JAM



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