Climatological Report (Monthly)
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000
CXUS53 KGRR 011650
CLMLAN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
1143 AM EST MON JAN 1 2018

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

...THE LANSING MI CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1864 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              70   12/31/1875
 LOW              -25   12/18/1884
                        12/08/1864
HIGHEST            60   12/05        54       6       55  12/26
                        12/04
LOWEST             -9   12/28        -2      -7        3  12/15
AVG. MAXIMUM     30.9              34.3    -3.4     32.9
AVG. MINIMUM     17.2              22.3    -5.1     22.9
MEAN             24.0              28.3    -4.3     27.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     18              12.8     5.2       13
DAYS MIN <= 32     28              25.4     2.6       25
DAYS MIN <= 0       6               1.0     5.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.91   1895
 MINIMUM         0.37   1967
TOTALS           1.32              1.87   -0.55     1.76
DAILY AVG.       0.04              0.06   -0.02     0.06
DAYS >= .01        13              13.9    -0.9       15
DAYS >= .10         5               5.6    -0.6        4
DAYS >= .50         0               0.7    -0.7        1
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.44   12/13 TO 12/13

SNOWFALL (INCHES)
RECORDS
 TOTAL           33.5   2000
 24 HR TOTAL     15.1   12/10/1970 TO 12/11/1970
 SNOW DEPTH        20   12/25/1951
TOTALS           17.4              13.0     4.4     16.1
SINCE 7/1        17.8              16.8     1.0     16.1
SNOWDEPTH AVG.      2                 2       0        3
DAYS >= TRACE      17              10.8     6.2       21
DAYS >= 1.0         6               4.2     1.8        6
GREATEST
 SNOW DEPTH         8   12/16                         10  12/12
 24 HR TOTAL      5.7   12/13 TO 12/13

DEGREE_DAYS
HEATING TOTAL    1263              1138     125     1142
 SINCE 7/1       2519              2552     -33     2117
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        782               625     157      869

FREEZE DATES
RECORD
 EARLIEST     08/03/1894
 LATEST       07/15/1863
EARLIEST                        10/01
LATEST                          05/10
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.1
RESULTANT WIND SPEED/DIRECTION   5/241
HIGHEST WIND SPEED/DIRECTION    37/250    DATE  12/05
HIGHEST GUST SPEED/DIRECTION    50/240    DATE  12/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            7
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         15

AVERAGE RH (PERCENT)     75

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       1
LIGHT RAIN                3     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                2     SNOW                       6
LIGHT SNOW               17     SLEET                      0
FOG                      20     FOG W/VIS <= 1/4 MILE      3
HAZE                      9

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

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