Climatological Report (Monthly)
Issued by NWS Mt. Holly, NJ

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CXUS51 KPHI 011647
CLMABE


CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1126 AM EST TUE JAN 1 2019

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

...THE ALLENTOWN CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1922 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              72   12/01/2006
                        12/04/1998
                        12/29/1984
 LOW               -9   12/31/1917
HIGHEST            64                59       5       57
LOWEST             17                 8       9        6
AVG. MAXIMUM     44.9              40.5     4.4     39.2
AVG. MINIMUM     29.5              24.0     5.5     24.0
MEAN             37.2              32.3     4.9     31.6
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               5.6    -5.6        9
DAYS MIN <= 32     20              25.4    -5.4       25
DAYS MIN <= 0       0               0.2    -0.2        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.89   1973
 MINIMUM         0.39   1955
TOTALS           6.24              3.58    2.66     1.88
DAILY AVG.       0.20              0.12    0.08     0.06
DAYS >= .01        12              10.9     1.1        9
DAYS >= .10        11               6.4     4.6        4
DAYS >= .50         5               2.6     2.4        1
DAYS >= 1.00        4               0.8     3.2        0
GREATEST
 24 HR. TOTAL    1.21   12/16 TO 12/16              0.92

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   5
 24 HR TOTAL       MM
TOTALS              T               5.2    -5.2      9.6
SINCE 7/1         8.1               5.9     2.2      9.6
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               1.7    -1.7        4
GREATEST
 SNOW DEPTH         0   MM                             5  12/10
 24 HR TOTAL        T   12/30 TO 12/30               4.9

DEGREE_DAYS
HEATING TOTAL     854              1015    -161     1029
 SINCE 7/1       1917              2195    -278     1942
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1287               757     530     1004
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.7
HIGHEST WIND SPEED/DIRECTION    30/320    DATE  12/18
HIGHEST GUST SPEED/DIRECTION    43/310    DATE  12/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            7
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2    MIXED PRECIP                0
HEAVY RAIN                3     RAIN                       9
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HEAVY SNOW                 0
SNOW                      0     LIGHT SNOW                 3
SLEET                     0     FOG                       17
FOG W/VIS <= 1/4 MILE     0     HAZE                       7

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

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