000
CXUS53 KGRR 011348
CLMGRR


CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
846 AM EST TUE JAN 1 2013

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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1892 TO 2012

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            65   12/04        53      12       57  12/15
                        12/03
LOWEST             17   12/25         1      16       17  12/10
AVG. MAXIMUM     41.7              34.8     6.9     40.6
AVG. MINIMUM     28.5              23.5     5.0     29.3
MEAN             35.1              29.2     5.9     35.0
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      8              11.7    -3.7        3
DAYS MIN <= 32     22              25.0    -3.0       22
DAYS MIN <= 0       0               0.7    -0.7        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.95   1893
 MINIMUM         0.31   1913
TOTALS           2.85              2.50    0.35     2.59
DAILY AVG.       0.09              0.08    0.01     0.08
DAYS >= .01        17              16.0     1.0       15
DAYS >= .10         8               6.9     1.1        6
DAYS >= .50         1               1.1    -0.1        1
DAYS >= 1.00        1               0.3     0.7        0
GREATEST
 24 HR. TOTAL    1.06   12/20 TO 12/20           12/14 TO 12/15
                                                          12/27 TO 12/27
                                                          12/27 TO 12/27

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            7.2              21.9   -14.7      4.5
 LIQUID EQUIV    0.72              2.20   -1.48       MM
SINCE 7/1         7.5              29.2   -21.7      5.2
 LIQUID 7/1      0.75              2.90   -2.15     0.07
SNOWDEPTH AVG.      0                 3      -3        0
DAYS >= TRACE      14              13.3     0.7       12
DAYS >= 1.0         2               6.6    -4.6        2
GREATEST
 SNOW DEPTH         3   12/27                          1  12/28
                        12/26                             12/24
                                                          12/09
 24 HR TOTAL      3.1   MM                       12/27 TO 12/27
                                                          12/27 TO 12/27
                                                          12/27 TO 12/27

DEGREE_DAYS
HEATING TOTAL     919              1111    -192      922
 SINCE 7/1       2228              2449    -221     2095
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1039               699     340      894

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

WIND (MPH)
AVERAGE WIND SPEED              9.0
RESULTANT WIND SPEED/DIRECTION   1/234
HIGHEST WIND SPEED/DIRECTION    35/330    DATE  12/21
HIGHEST GUST SPEED/DIRECTION    49/340    DATE  12/21

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   18
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         21

AVERAGE RH (PERCENT)     76

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               2
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW               14     SLEET                      1
FOG                      23     FOG W/VIS <= 1/4 MILE      3
HAZE                     12

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

$$