401
CDUS41 KPHI 212133
CLIABE
CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
433 PM EST SUN DEC 21 2025
...............................
..THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 21 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 45 12:51 PM 64 2018 42 3 32
MINIMUM 23 7:46 AM -3 1942 26 -3 15
AVERAGE 34 34 0 24
PRECIPITATION (IN)
TODAY 0.00 1.44 2012 0.11 -0.11 0.01
MONTH TO DATE 1.75 2.74 -0.99 2.55
SINCE DEC 1 1.75 2.74 -0.99 2.55
SINCE JAN 1 36.72 46.24 -9.52 40.75
SNOWFALL (IN)
TODAY 0.0 4.1 1959 0.2 -0.2 0.1
MONTH TO DATE 6.2 2.9 3.3 4.1
SINCE DEC 1 6.2 2.9 3.3 4.1
SINCE JUL 1 6.4 4.0 2.4 4.1
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 31 31 0 41
MONTH TO DATE 771 606 165 664
SINCE DEC 1 771 606 165 664
SINCE JUL 1 1783 1642 141 1533
COOLING
TODAY 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 23 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 9.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 91 8:00 AM
LOWEST 29 2:00 PM
AVERAGE 60
......................................................
THE ALLENTOWN PA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 41 65 2013
MINIMUM TEMPERATURE (F) 26 -2 1944
SUNRISE AND SUNSET
DECEMBER 21 2025......SUNRISE 7:22 AM EST SUNSET 4:38 PM EST
DECEMBER 22 2025......SUNRISE 7:23 AM EST SUNSET 4:38 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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