Climatological Report (Monthly)
Issued by NWS

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CXUS53 KGRR 011729
CLMJXN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
1212 PM EST TUE JAN 1 2019

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

...THE JACKSON MI CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1944 TO 9999

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
HIGHEST            55   12/02        MM      MM       58  12/05
                                                          12/04
LOWEST             10   12/09        MM      MM      -11  12/28
AVG. MAXIMUM     38.5              34.7     3.8     32.4
AVG. MINIMUM     26.2              21.5     4.7     18.3
MEAN             32.4              28.1     4.3     25.4
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      8              12.6    -4.6       17
DAYS MIN <= 32     27              26.5     0.5       28
DAYS MIN <= 0       0               1.1    -1.1        5

PRECIPITATION (INCHES)
TOTALS           2.33              1.87    0.46     0.68
DAILY AVG.       0.08              0.06    0.02     0.02
DAYS >= .01        13              12.4     0.6        9
DAYS >= .10         7               5.2     1.8        3
DAYS >= .50         1               0.8     0.2        0
DAYS >= 1.00        0               0.1    -0.1        0
GREATEST
 24 HR. TOTAL    0.94   12/31 TO 12/31

DEGREE_DAYS
HEATING TOTAL    1003              1144    -141     1222
 SINCE 7/1       2505              2548     -43     2464
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        938               592     346      657
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.5
RESULTANT WIND SPEED/DIRECTION   3/217
HIGHEST WIND SPEED/DIRECTION    30/220    DATE  12/28
HIGHEST GUST SPEED/DIRECTION    41/130    DATE  12/27

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY         18

AVERAGE RH (PERCENT)     81

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP                0
HEAVY RAIN                1     RAIN                        4
LIGHT RAIN                8     FREEZING RAIN               0
LT FREEZING RAIN          0     HAIL                        0
HEAVY SNOW                0     SNOW                        0
LIGHT SNOW               10     SLEET                       0
FOG                      24     FOG W/VIS <= 1/4 MILE       7
HAZE                     10
-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$

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