682  
CDUS46 KMTR 280831  
CLICCR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
131 AM PDT THU AUG 28 2025  
   
...............................
 
 
   
..THE CONCORD AIRPORT CLIMATE SUMMARY FOR AUGUST 27 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1999 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 84 3:16 PM 107 2017 88 -4 98  
MINIMUM 61 6:03 AM 53 2009 59 2 60  
AVERAGE 73 74 -1 79  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE 0.00 T  
SINCE OCT 1 4.30 12.46  
SINCE JAN 1 2.04 9.33  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0  
MONTH TO DATE 0 0  
SINCE JUN 1 1 3  
SINCE JUL 1 0 3  
 
COOLING  
YESTERDAY 8 14  
MONTH TO DATE 262 266  
SINCE JUN 1 591 930  
SINCE JAN 1 702 1013    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION W (250)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 8.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 5:00 AM  
LOWEST 37 2:00 PM  
AVERAGE 60  
   
......................................................
 
 
THE CONCORD AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 105 2008  
MINIMUM TEMPERATURE (F) 59 53 2011  
 
SUNRISE AND SUNSET  
AUGUST 28 2025........SUNRISE 6:35 AM PDT SUNSET 7:43 PM PDT  
AUGUST 29 2025........SUNRISE 6:36 AM PDT SUNSET 7:41 PM PDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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