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

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984
CDUS41 KPHI 100553
CLIABE

CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1253 AM EST WED DEC 10 2025

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

...THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 9 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1922 TO 2025


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         31   4:28 PM  66    1980  45    -14       44
  MINIMUM          8   7:14 AM   7    1989  28    -20       27
                                      2002
  AVERAGE         20                        36    -16       36

PRECIPITATION (IN)
  YESTERDAY        0.00          2.05 1914   0.13  -0.13     0.31
  MONTH TO DATE    0.55                      1.22  -0.67     0.34
  SINCE DEC 1      0.55                      1.22  -0.67     0.34
  SINCE JAN 1     35.52                     44.72  -9.20    38.54

SNOWFALL (IN)
  YESTERDAY        0.0           9.1  2005   0.1   -0.1      0.0
  MONTH TO DATE    0.8                       1.1   -0.3       T
  SINCE DEC 1      0.8                       1.1   -0.3       T
  SINCE JUL 1      1.0                       2.2   -1.2       T
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       45                        28     17       29
  MONTH TO DATE  332                       245     87      292
  SINCE DEC 1    332                       245     87      292
  SINCE JUL 1   1344                      1281     63     1161

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    924                       981    -57      994
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED     4.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    73           8:00 AM
 LOWEST     29           1:00 PM
 AVERAGE    51

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


THE ALLENTOWN PA CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   45        70      1946
 MINIMUM TEMPERATURE (F)   28         1      1958


SUNRISE AND SUNSET
DECEMBER 10 2025......SUNRISE   7:15 AM EST   SUNSET   4:34 PM EST
DECEMBER 11 2025......SUNRISE   7:16 AM EST   SUNSET   4:35 PM EST


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




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