253  
CDUS41 KPHI 092133  
CLIABE  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
533 PM EDT FRI MAY 09 2025  
   
...............................
 
 
   
..THE ALLENTOWN PA CLIMATE SUMMARY FOR MAY 9 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 57 12:00 AM 92 1936 72 -15 68  
MINIMUM 51 3:26 PM 31 1947 48 3 55  
1956  
AVERAGE 54 60 -6 62  
 
PRECIPITATION (IN)  
TODAY 1.48R 1.15 1923 0.12 1.36 0.15  
MONTH TO DATE 4.43 1.03 3.40 1.07  
SINCE MAR 1 10.16 8.33 1.83 11.77  
SINCE JAN 1 13.49 14.40 -0.91 20.42  
 
SNOWFALL (IN)  
TODAY 0.0 T 1966 0.0 0.0 0.0  
1977  
2020  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE MAR 1 0.0 6.8 -6.8 T  
SINCE JUL 1 17.8 33.1 -15.3 25.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 11 6 5 3  
MONTH TO DATE 22 63 -41 41  
SINCE MAR 1 1018 1221 -203 1048  
SINCE JUL 1 5060 5187 -127 4787  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 10 9 1 16  
SINCE MAR 1 11 17 -6 27  
SINCE JAN 1 11 17 -6 27    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 8.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 2:00 AM  
LOWEST 86 4:00 PM  
AVERAGE 92  
   
......................................................
 
 
THE ALLENTOWN PA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 91 1979  
MINIMUM TEMPERATURE (F) 49 28 1947  
 
SUNRISE AND SUNSET  
MAY 9 2025...........SUNRISE 5:51 AM EDT SUNSET 8:06 PM EDT  
MAY 10 2025...........SUNRISE 5:50 AM EDT SUNSET 8:07 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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