Climatological Report (Monthly)
Issued by NWS Huntsville, AL

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000
CXUS54 KHUN 020335
CLMMSL


CLIMATE REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
932 PM CST MON JAN 1 2018

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

...THE MUSCLE SHOALS CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1893 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              78   12/25/2016
                        12/27/2015
                        12/07/1998
 LOW               -5   12/23/1989
HIGHEST            71   12/23        MM      MM       78
LOWEST             16   12/31        MM      MM       22
AVG. MAXIMUM     52.9              52.8     0.1     56.7
AVG. MINIMUM     32.9              33.8    -0.9     36.2
MEAN             42.9              43.3    -0.4     46.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      1               1.0     0.0        0
DAYS MIN <= 32     17              14.4     2.6       13
DAYS MIN <= 0       0               0.1    -0.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        19.19   1990
 MINIMUM         0.65   1980
TOTALS           5.36              5.68   -0.32     5.34
DAILY AVG.       0.17              0.18   -0.01
DAYS >= .01         7              10.6    -3.6       12
DAYS >= .10         5               7.3    -2.3       10
DAYS >= .50         4               3.6     0.4        3
DAYS >= 1.00        2               1.7     0.3        1
GREATEST
 24 HR. TOTAL    2.07   12/05 TO 12/05              2.07

SNOWFALL (INCHES)
RECORDS
 TOTAL           11.1   1963
 24 HR TOTAL      6.0   12/22/1963 TO 12/22/1963
                        12/27/1907 TO 12/27/1907
TOTALS            0.0               0.4    -0.4        T
SINCE 7/1         0.0               0.4    -0.4        T
DAYS >= TRACE       0               0.4    -0.4
DAYS >= 1.0         0               0.1    -0.1
GREATEST
 24 HR TOTAL      0.0   12/31 TO 12/31                 T

DEGREE_DAYS
HEATING TOTAL     676               674       2      568
 SINCE 7/1       1183              1236     -53      896
COOLING TOTAL       0                 1      -1        2
 SINCE 1/1       1973              1872     101     2368

FREEZE DATES
RECORD
 EARLIEST     10/03/1908
 LATEST       04/27/1919
EARLIEST                        11/07
LATEST                          03/28
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.2
HIGHEST WIND SPEED/DIRECTION    37/190    DATE  12/23
HIGHEST GUST SPEED/DIRECTION    48/190    DATE  12/23

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       6
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      0

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

$$




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