359
CDUS41 KPHI 172132
CLIABE
CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
532 PM EDT WED SEP 17 2025
...............................
..THE ALLENTOWN PA CLIMATE SUMMARY FOR SEPTEMBER 17 2025
VALID TODAY AS OF 0500 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 74 3:27 PM 93 1991 77 -3 78
MINIMUM 60 6:35 AM 39 1959 55 5 57
1986
2007
AVERAGE 67 66 1 68
PRECIPITATION (IN)
TODAY T 1.83 1958 0.17 -0.17 0.00
MONTH TO DATE 2.07 2.57 -0.50 0.44
SINCE SEP 1 2.07 2.57 -0.50 0.44
SINCE JAN 1 30.37 33.85 -3.48 35.06
SNOWFALL (IN)
TODAY 0.0 0.0 2001 0.0 0.0 0.0
2002
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 0 2 -2 0
MONTH TO DATE 9 19 -10 27
SINCE SEP 1 9 19 -10 27
SINCE JUL 1 21 23 -2 36
COOLING
TODAY 2 3 -1 3
MONTH TO DATE 45 81 -36 26
SINCE SEP 1 45 81 -36 26
SINCE JAN 1 864 941 -77 962
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 11.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 3:00 AM
LOWEST 55 1:00 PM
AVERAGE 71
......................................................
THE ALLENTOWN PA CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 90 1965
MINIMUM TEMPERATURE (F) 55 36 1990
SUNRISE AND SUNSET
SEPTEMBER 17 2025.....SUNRISE 6:45 AM EDT SUNSET 7:07 PM EDT
SEPTEMBER 18 2025.....SUNRISE 6:46 AM EDT SUNSET 7:05 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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