580  
CDUS41 KPHI 210609  
CLIILG  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
209 AM EDT TUE SEP 21 2021  
   
...............................
 
 
   
..THE WILMINGTON DE CLIMATE SUMMARY FOR SEPTEMBER 20 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 78 2:43 PM 93 1983 77 1 66  
MINIMUM 56 5:21 AM 40 1920 58 -2 42  
AVERAGE 67 68 -1 54  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.49 1938 0.16 -0.16 0.00  
MONTH TO DATE 3.32 2.87 0.45 0.82  
SINCE SEP 1 3.32 2.87 0.45 0.82  
SINCE JAN 1 29.35 33.23 -3.88 35.37  
 
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 2 -2 11  
MONTH TO DATE 0 10 -10 32  
SINCE SEP 1 0 10 -10 32  
SINCE JUL 1 0 11 -11 32  
 
COOLING  
YESTERDAY 2 4 -2 0  
MONTH TO DATE 147 124 23 117  
SINCE SEP 1 147 124 23 117  
SINCE JAN 1 1342 1175 167 1269    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 7.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 5:00 AM  
LOWEST 50 1:00 PM  
AVERAGE 75  
   
......................................................
 
 
THE WILMINGTON DE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 97 1895  
MINIMUM TEMPERATURE (F) 58 37 1956  
 
SUNRISE AND SUNSET  
SEPTEMBER 21 2021.....SUNRISE 6:49 AM EDT SUNSET 7:01 PM EDT  
SEPTEMBER 22 2021.....SUNRISE 6:50 AM EDT SUNSET 6:59 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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