435
CDUS41 KPHI 152143
CLIABE
CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
443 PM EST MON DEC 15 2025
...............................
..THE ALLENTOWN PA CLIMATE SUMMARY FOR DECEMBER 15 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 25 3:36 PM 66 2015 43 -18 34
MINIMUM 14 7:52 AM 6 1960 27 -13 16
2005
AVERAGE 20 35 -15 25
PRECIPITATION (IN)
TODAY 0.00 0.89 1948 0.13 -0.13 0.08
MONTH TO DATE 1.08 2.03 -0.95 1.71
SINCE DEC 1 1.08 2.03 -0.95 1.71
SINCE JAN 1 36.05 45.53 -9.48 39.91
SNOWFALL (IN)
TODAY 0.0 4.0 1950 0.2 -0.2 0.3
MONTH TO DATE 6.2 2.0 4.2 0.3
SINCE DEC 1 6.2 2.0 4.2 0.3
SINCE JUL 1 6.4 3.1 3.3 0.3
SNOW DEPTH 5
DEGREE DAYS
HEATING
TODAY 45 30 15 40
MONTH TO DATE 565 422 143 486
SINCE DEC 1 565 422 143 486
SINCE JUL 1 1577 1458 119 1355
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 17 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 10.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 64 8:00 AM
LOWEST 51 12:00 AM
AVERAGE 58
......................................................
THE ALLENTOWN PA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 43 61 2021
MINIMUM TEMPERATURE (F) 27 1 1951
SUNRISE AND SUNSET
DECEMBER 15 2025......SUNRISE 7:19 AM EST SUNSET 4:35 PM EST
DECEMBER 16 2025......SUNRISE 7:19 AM EST SUNSET 4:36 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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