Climatological Report (Monthly)
Issued by NWS Jackson, MS

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CXUS54 KJAN 010748
CLMGLH


CLIMATE REPORT
NATIONAL WEATHER SERVICE JACKSON MS
144 AM CST MON JAN 1 2018

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

...THE GREENVILLE CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1903 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              85   12/16/1924
 LOW                1   12/24/1989
                        12/23/1989
                        12/22/1989
HIGHEST            76   12/04        MM      MM       80  12/26
LOWEST             19   12/31        MM      MM       20  12/19
AVG. MAXIMUM     54.7              54.3     0.4     56.3
AVG. MINIMUM     35.2              35.7    -0.5     38.4
MEAN             45.0              45.0     0.0     47.3
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      1               0.4     0.6        0
DAYS MIN <= 32     15              12.2     2.8       11
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        21.53   1931
 MINIMUM         0.49   1980
TOTALS           4.86              5.62   -0.76     2.86
DAILY AVG.       0.16              0.18   -0.02     0.09
DAYS >= .01         6                MM      MM       10
DAYS >= .10         5                MM      MM        7
DAYS >= .50         5                MM      MM        2
DAYS >= 1.00        2                MM      MM        1
GREATEST
 24 HR. TOTAL    1.49   12/19 TO 12/19              1.04

SNOWFALL (INCHES)
TOTALS            0.0

DEGREE_DAYS
HEATING TOTAL     619               622      -3      554
 SINCE 7/1       1033              1084     -51      823
COOLING TOTAL       4                 3       1       12
 SINCE 1/1       2248              2189      59     2684
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.6
HIGHEST WIND SPEED/DIRECTION    36/340    DATE  12/19
HIGHEST GUST SPEED/DIRECTION    44/330    DATE  12/19

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           17
NUMBER OF DAYS PC              5
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     67

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

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

$$




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