Climatological Report (Annual)
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000
CXUS53 KGRR 030231
CLAMKG

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
931 PM EST TUE JAN 2 2018

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

...THE MUSKEGON MI CLIMATE SUMMARY FOR THE YEAR OF 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1896 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              99   07/06/2012
                        08/03/1964
                        07/30/1913
 LOW              -30   02/11/1899
HIGHEST            92   09/23        MM      MM       90  07/23
LOWEST             -6   12/31        MM      MM        2  01/19
AVG. MAXIMUM     58.7              56.5     2.2     59.3
AVG. MINIMUM     41.8              40.6     1.2     42.8
MEAN             50.2              48.6     1.6     51.0
DAYS MAX >= 90      4               1.8     2.2        1
DAYS MAX <= 32     41              46.1    -5.1       34
DAYS MIN <= 32    114             122.9    -8.9      110
DAYS MIN <= 0       2               1.9     0.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        45.98   2008
 MINIMUM           MM   MM
TOTALS          36.54             33.49    3.05    39.55
DAILY AVG.       0.10              0.09    0.01     0.11
DAYS >= .01       153             141.2    11.8      143
DAYS >= .10        83              74.1     8.9       80
DAYS >= .50        18              19.9    -1.9       20
DAYS >= 1.00        8               5.5     2.5        9
GREATEST
 24 HR. TOTAL    2.80   10/23 TO 10/23

SNOWFALL (INCHES)
RECORDS
 TOTAL          182.2   1962
 24 HR TOTAL     22.0   01/10/1982 TO 01/10/1982
 SNOW DEPTH        MM   MM
TOTALS           76.7              93.7   -17.0     74.4
SINCE 7/1        51.7              35.1    16.6     21.4
SNOWDEPTH AVG.      1                MM      MM        1
DAYS >= TRACE      68              51.5    16.5       74
DAYS >= 1.0        27              27.9    -0.9       24
GREATEST
 SNOW DEPTH        18   12/30                         14  01/22
                                                          01/21
 24 HR TOTAL     14.7   12/29 TO 12/29

DEGREE_DAYS
HEATING TOTAL    5893              6559    -666     5782
 SINCE 7/1         MM              2446      MM       MM
COOLING TOTAL     615               565      50      774
 SINCE 1/1        615               566      49      774

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

WIND (MPH)
AVERAGE WIND SPEED              9.4
RESULTANT WIND SPEED/DIRECTION   2/245
HIGHEST WIND SPEED/DIRECTION    39/220    DATE  10/07
HIGHEST GUST SPEED/DIRECTION    54/180    DATE  01/10

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           50
NUMBER OF DAYS PC            161
NUMBER OF DAYS CLOUDY        154

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             31     MIXED PRECIP               1
HEAVY RAIN               30     RAIN                      59
LIGHT RAIN              164     FREEZING RAIN              0
LT FREEZING RAIN          4     HAIL                       0
HEAVY SNOW               10     SNOW                      24
LIGHT SNOW               66     SLEET                      2
FOG                     183     FOG W/VIS <= 1/4 MILE     30
HAZE                     42

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

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