Climatological Report (Monthly)
Issued by NWS

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CXUS53 KGRR 011428
CLMMKG


CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
916 AM EST SUN JAN 1 2017

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

...THE MUSKEGON MI CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1896 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              66   12/03/2012
 LOW              -15   12/31/1976
HIGHEST            52   12/26        51       1       63  12/13
LOWEST             10   12/15         5       5       24  12/19
AVG. MAXIMUM     34.9              35.1    -0.2     45.4
AVG. MINIMUM     26.2              25.3     0.9     34.2
MEAN             30.5              30.2     0.3     39.8
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      9              10.9    -1.9        1
DAYS MIN <= 32     23              23.8    -0.8       15
DAYS MIN <= 0       0               0.2    -0.2        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.99   2008
 MINIMUM         0.47   1930
TOTALS           2.22              2.55   -0.33     4.90
DAILY AVG.       0.07              0.08   -0.01     0.16
DAYS >= .01        16              15.7     0.3       14
DAYS >= .10         6               7.1    -1.1        7
DAYS >= .50         1               1.0     0.0        3
DAYS >= 1.00        0               0.3    -0.3        3
GREATEST
 24 HR. TOTAL    0.59   12/10 TO 12/11

SNOWFALL (INCHES)
RECORDS
 TOTAL           82.6   1963
 24 HR TOTAL     14.8   12/17/1963 TO 12/17/1963
 SNOW DEPTH        34   12/20/1963
TOTALS           20.4              28.9    -8.5      4.9
SINCE 7/1        21.4              35.1   -13.7      8.8
SNOWDEPTH AVG.      4                 4       0        0
DAYS >= TRACE      20              12.9     7.1        7
DAYS >= 1.0         7               8.6    -1.6        2
GREATEST
 SNOW DEPTH        10   12/17                          4  12/31
                                                          12/30
 24 HR TOTAL      7.6   12/11 TO 12/11

DEGREE_DAYS
HEATING TOTAL    1060              1079     -19      773
 SINCE 7/1       1965              2446    -481     1840
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        774               566     208      570

FREEZE DATES
RECORD
 EARLIEST     09/22/1976
 LATEST       06/22/1992
EARLIEST                        10/14
LATEST                          05/04
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              12.7
RESULTANT WIND SPEED/DIRECTION   7/253
HIGHEST WIND SPEED/DIRECTION    35/230    DATE  12/20
HIGHEST GUST SPEED/DIRECTION    46/250    DATE  12/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.90
NUMBER OF DAYS FAIR            0
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY         25

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               1
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       6
LIGHT SNOW               20     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      3
HAZE                      7

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

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