455
CDUS41 KPHI 180554
CLIABE
CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
154 AM EDT THU SEP 18 2025
...............................
..THE ALLENTOWN PA CLIMATE SUMMARY FOR SEPTEMBER 17 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 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)
YESTERDAY 0.01 1.83 1958 0.17 -0.16 0.00
MONTH TO DATE 2.08 2.57 -0.49 0.44
SINCE SEP 1 2.08 2.57 -0.49 0.44
SINCE JAN 1 30.38 33.85 -3.47 35.06
SNOWFALL (IN)
YESTERDAY 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
YESTERDAY 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
YESTERDAY 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 9.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 10:00 PM
LOWEST 55 1:00 PM
AVERAGE 71
......................................................
THE ALLENTOWN PA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 90 1965
MINIMUM TEMPERATURE (F) 55 36 1990
SUNRISE AND SUNSET
SEPTEMBER 18 2025.....SUNRISE 6:46 AM EDT SUNSET 7:05 PM EDT
SEPTEMBER 19 2025.....SUNRISE 6:47 AM EDT SUNSET 7:03 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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