842  
CDUS41 KPHI 170553  
CLIILG  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
153 AM EDT FRI SEP 17 2021  
   
...............................
 
 
   
..THE WILMINGTON DE CLIMATE SUMMARY FOR SEPTEMBER 16 2021
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1894 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 83 12:57 PM 94 1970 79 4 71  
MINIMUM 69 4:59 AM 40 1984 59 10 48  
AVERAGE 76 69 7 60  
 
PRECIPITATION (IN)  
YESTERDAY T 8.29 1999 0.16 -0.16 0.00  
MONTH TO DATE 3.32 2.24 1.08 0.78  
SINCE SEP 1 3.32 2.24 1.08 0.78  
SINCE JAN 1 29.35 32.60 -3.25 35.33  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 1894 0.0 0.0 0.0  
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 1 -1 5  
MONTH TO DATE 0 5 -5 11  
SINCE SEP 1 0 5 -5 11  
SINCE JUL 1 0 6 -6 11  
 
COOLING  
YESTERDAY 11 5 6 0  
MONTH TO DATE 117 107 10 114  
SINCE SEP 1 117 107 10 114  
SINCE JAN 1 1312 1158 154 1266    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 9.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 3:00 AM  
LOWEST 67 12:00 PM  
AVERAGE 82  
   
......................................................
 
 
THE WILMINGTON DE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 92 1991  
MINIMUM TEMPERATURE (F) 59 43 1986  
 
SUNRISE AND SUNSET  
SEPTEMBER 17 2021.....SUNRISE 6:46 AM EDT SUNSET 7:07 PM EDT  
SEPTEMBER 18 2021.....SUNRISE 6:47 AM EDT SUNSET 7:06 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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