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

000
CXUS51 KPHI 020750
CLMABE

CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
250 AM EST TUE JAN 02 2024

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

...THE ALLENTOWN PA CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1922 TO 2024

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           59                 59       0       59
LOWEST            21                  8      13        3
AVG. MAXIMUM    46.7               43.1     3.6     42.1
AVG. MINIMUM    31.8               26.8     5.0     23.7
MEAN            39.3               35.0     4.3     32.9
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                4.8    -4.8        3
DAYS MIN <= 32    17               23.8    -6.8       27
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        7.89   1973
 MINIMUM        0.39   1955
TOTALS          8.62               3.86    4.76     4.43
DAILY AVG.      0.28               0.12    0.16     0.14
DAYS >= .01       13               11.5     1.5        9
DAYS >= .10        8                7.3     0.7        8
DAYS >= .50        5                2.8     2.2        3
DAYS >= 1.00       4                1.0     3.0        1
GREATEST
 24 HR. TOTAL   3.27   12/17 TO 12/18               1.35

SNOWFALL (INCHES)
RECORDS
 TOTAL          28.4   1966
 24 HR TOTAL      MM
TOTALS             T                4.6    -4.6      1.4
SINCE 7/1          T                5.7    -5.7       MM
SNOWDEPTH AVG.     0                                  -1
DAYS >= 1.0        0                1.4    -1.4        1
GREATEST
 SNOW DEPTH        0                                  MM  12/29
                                                          12/30
                                                          12/16
 24 HR TOTAL       T                                  MM

DEGREE DAYS
HEATING TOTAL    790                932    -142      989
 SINCE 7/1      1877               1970     -93       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1       790                981    -191       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.7
HIGHEST WIND SPEED/DIRECTION    36/080    DATE  12/28
HIGHEST GUST SPEED/DIRECTION    42/080    DATE  12/28

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.62
NUMBER OF DAYS FAIR            7
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         15

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                       8
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HEAVY SNOW                 0
SNOW                      0     LIGHT SNOW                 6
SLEET                     0     FOG                       17
FOG W/VIS <= 1/4 MILE     2     HAZE                       2

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

$$