729  
CDUS46 KMTR 110827  
CLICCR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
127 AM PDT THU SEP 11 2025  
   
...............................  
 
   
..THE CONCORD AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 10 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 76 2:07 PM 105 2015 86 -10 78  
MINIMUM 62 6:12 AM 51 2000 59 3 58  
AVERAGE 69 72 -3 68  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE T 0.00  
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 SEP 1 0 0  
SINCE JUL 1 0 3  
 
COOLING  
YESTERDAY 4 3  
MONTH TO DATE 76 103  
SINCE SEP 1 76 103  
SINCE JAN 1 827 1151    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION SW (220)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 9.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 12:00 AM  
LOWEST 52 1:00 PM  
AVERAGE 68  
   
......................................................  
 
THE CONCORD AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 86 102 2015  
MINIMUM TEMPERATURE (F) 59 52 2000  
 
SUNRISE AND SUNSET  
SEPTEMBER 11 2025.....SUNRISE 6:47 AM PDT SUNSET 7:22 PM PDT  
SEPTEMBER 12 2025.....SUNRISE 6:48 AM PDT SUNSET 7:20 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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