AFOS product CLIIAD
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136 
CDUS41 KLWX 120527
CLIIAD

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 
127 AM EDT SAT AUG 12 2023

...................................

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 11 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2023


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         89   3:39 PM  99    2021  87      2       86        
  MINIMUM         64   4:57 AM  47    1972  66     -2       71        
  AVERAGE         77                        76      1       79     

PRECIPITATION (IN)                                                    
  YESTERDAY        T             4.68 1984   0.11  -0.11      T       
  MONTH TO DATE    1.24                      1.30  -0.06     1.80     
  SINCE JUN 1      8.63                      9.75  -1.12     9.78     
  SINCE JAN 1     18.61                     26.99  -8.38    27.00     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0          MM      MM   0.0    0.0      0.0      
  MONTH TO DATE    0.0                       0.0    0.0      0.0      
  SINCE JUN 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                         0      0        0        
  MONTH TO DATE    0                         0      0        0        
  SINCE JUN 1      5                        13     -8        0        
  SINCE JUL 1      0                         0      0        0        

 COOLING                                                              
  YESTERDAY       12                        11      1       14        
  MONTH TO DATE  124                       131     -7      185        
  SINCE JUN 1    779                       747     32      838        
  SINCE JAN 1    853                       853      0      967        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     W (290)       
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     W (270)       
  AVERAGE WIND SPEED     4.4                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.5                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  LIGHT RAIN                                                          


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    87           5:00 AM                                      
 LOWEST     45           3:00 PM                                      
 AVERAGE    66                                                        

..........................................................


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   87       100      2021                      
 MINIMUM TEMPERATURE (F)   66        51      1962                      


SUNRISE AND SUNSET                                                    
AUGUST 12 2023........SUNRISE   6:20 AM EDT   SUNSET   8:09 PM EDT     
AUGUST 13 2023........SUNRISE   6:21 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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