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

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CXUS53 KGRR 011850
CLMGRR


CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
132 PM EST FRI JAN 1 2016

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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1892 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              69   12/05/2001
 LOW              -18   12/19/1983
HIGHEST            61   12/13        53       8       51  12/23
LOWEST             21   12/20         1      20       13  12/02
AVG. MAXIMUM     45.2              34.8    10.4     37.3
AVG. MINIMUM     33.1              23.5     9.6     26.5
MEAN             39.1              29.2     9.9     31.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      3              11.7    -8.7        6
DAYS MIN <= 32     15              25.0   -10.0       23
DAYS MIN <= 0       0               0.7    -0.7        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.95   1893
 MINIMUM         0.31   1913
TOTALS           3.33              2.50    0.83     1.57
DAILY AVG.       0.11              0.08    0.03     0.05
DAYS >= .01        16              16.0     0.0       12
DAYS >= .10         5               6.9    -1.9        4
DAYS >= .50         2               1.1     0.9        1
DAYS >= 1.00        0               0.3    -0.3        0
GREATEST
 24 HR. TOTAL    0.90   12/28 TO 12/28           12/24 TO 12/24
                                                          12/23 TO 12/24
                                                          12/24 TO 12/24

SNOWFALL (INCHES)
RECORDS
 TOTAL           59.2   2000
 24 HR TOTAL     15.1   12/10/1970 TO 12/11/1970
 SNOW DEPTH        22   12/27/1951
                        12/26/1951
                        12/25/1951
TOTALS            2.5              21.9   -19.4      1.0
SINCE 7/1         6.0              29.2   -23.2     32.0
SNOWDEPTH AVG.      0                 3      -3        0
DAYS >= TRACE       8              13.3    -5.3       17
DAYS >= 1.0         1               6.6    -5.6        0
GREATEST
 SNOW DEPTH         2   12/31                         -1  MM
 24 HR TOTAL      1.6   12/28 TO 12/28           12/31 TO 12/31

DEGREE_DAYS
HEATING TOTAL     797              1111    -314     1019
 SINCE 7/1       1855              2449    -594     2515
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        642               699     -57      611

FREEZE DATES
RECORD
 EARLIEST     09/03/1946
 LATEST       06/04/1945
EARLIEST                        10/13
LATEST                          05/02
.....................................................

WIND (MPH)
AVERAGE WIND SPEED              11.5
RESULTANT WIND SPEED/DIRECTION   5/216
HIGHEST WIND SPEED/DIRECTION    45/230    DATE  12/24
HIGHEST GUST SPEED/DIRECTION    66/280    DATE  12/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   16
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         21

AVERAGE RH (PERCENT)     80

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               1
HEAVY RAIN                2     RAIN                       6
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          3     HAIL                       0
HEAVY SNOW                2     SNOW                       3
LIGHT SNOW                7     SLEET                      1
FOG                      25     FOG W/VIS <= 1/4 MILE      8
HAZE                      5

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

$$

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