573
CDUS41 KPHI 202130
CLIABE
CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
430 PM EST SAT DEC 20 2025
...............................
..THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 20 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 36 3:59 PM 63 1957 42 -6 33
MINIMUM 20 6:50 AM -2 1942 26 -6 30
1951
AVERAGE 28 34 -6 32
PRECIPITATION (IN)
TODAY 0.00 2.19 1957 0.12 -0.12 0.21
MONTH TO DATE 1.75 2.63 -0.88 2.54
SINCE DEC 1 1.75 2.63 -0.88 2.54
SINCE JAN 1 36.72 46.13 -9.41 40.74
SNOWFALL (IN)
TODAY 0.0 6.2 1966 0.1 -0.1 3.7
MONTH TO DATE 6.2 2.7 3.5 4.0
SINCE DEC 1 6.2 2.7 3.5 4.0
SINCE JUL 1 6.4 3.8 2.6 4.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 37 31 6 33
MONTH TO DATE 740 575 165 623
SINCE DEC 1 740 575 165 623
SINCE JUL 1 1752 1611 141 1492
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 25 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 9.5
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 74 7:00 AM
LOWEST 46 4:00 PM
AVERAGE 60
......................................................
THE ALLENTOWN PA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 42 64 2018
MINIMUM TEMPERATURE (F) 26 -3 1942
SUNRISE AND SUNSET
DECEMBER 20 2025......SUNRISE 7:22 AM EST SUNSET 4:37 PM EST
DECEMBER 21 2025......SUNRISE 7:22 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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