Climatological Report (Monthly)
Issued by NWS Jackson, MS

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000
CXUS54 KJAN 010748
CLMJAN


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

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

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

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1896 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              84   12/26/2015
                        12/07/1978
                        12/06/1951
 LOW                4   12/23/1989
HIGHEST            82   12/22        77       5       81  12/26
                                                          12/17
LOWEST             22   12/31        20       2       25  12/20
AVG. MAXIMUM     60.3              58.2     2.1     63.0
AVG. MINIMUM     39.2              37.3     1.9     42.4
MEAN             49.7              47.8     1.9     52.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.3    -0.3        0
DAYS MIN <= 32     11              11.6    -0.6        7
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        17.70   1982
 MINIMUM         0.91   1980
TOTALS           3.67              5.15   -1.48     5.74
DAILY AVG.       0.12              0.17   -0.05     0.19
DAYS >= .01        11               9.6     1.4       10
DAYS >= .10         7               6.8     0.2        7
DAYS >= .50         3               3.6    -0.6        4
DAYS >= 1.00        0               1.6    -1.6        2
GREATEST
 24 HR. TOTAL    0.97   12/17 TO 12/17              2.21

SNOWFALL (INCHES)
RECORDS
 TOTAL            8.0   1929
TOTALS            5.1               0.3     4.8      0.0
SINCE 7/1         5.1               0.3     4.8      0.0
DAYS >= TRACE       2
DAYS >= 1.0         1               0.1     0.9        0
GREATEST
 24 HR TOTAL      5.1   12/08 TO 12/08

DEGREE_DAYS
HEATING TOTAL     476               542     -66      404
 SINCE 7/1        735               950    -215      608
COOLING TOTAL      11                 8       3       30
 SINCE 1/1       2549              2261     288     2829
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.4
HIGHEST WIND SPEED/DIRECTION    24/360    DATE  12/31
HIGHEST GUST SPEED/DIRECTION    31/360    DATE  12/31

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         12

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       7
LIGHT RAIN               15     FREEZING RAIN              1
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       1
LIGHT SNOW                1     SLEET                      0
FOG                      18     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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