790  
CDUS46 KMTR 040830  
CLICCR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
130 AM PDT SAT OCT 04 2025  
   
...............................  
 
   
..THE CONCORD AIRPORT CLIMATE SUMMARY FOR OCTOBER 3 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 73 4:10 PM 102 2024 82 -9 102  
MINIMUM 59 4:15 AM 45 2013 55 4 61  
AVERAGE 66 69 -3 82  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE 0.06 0.00  
SINCE OCT 1 0.06 0.00  
SINCE JAN 1 2.13 9.33  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0  
MONTH TO DATE 0 0  
SINCE SEP 1 0 1  
SINCE JUL 1 0 4  
 
COOLING  
YESTERDAY 1 17  
MONTH TO DATE 7 53  
SINCE SEP 1 256 276  
SINCE JAN 1 1007 1324    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (230)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 6.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 2:00 AM  
LOWEST 46 4:00 PM  
AVERAGE 65  
   
......................................................  
 
THE CONCORD AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 97 2024  
MINIMUM TEMPERATURE (F) 55 46 2009  
 
SUNRISE AND SUNSET  
OCTOBER 4 2025.......SUNRISE 7:07 AM PDT SUNSET 6:46 PM PDT  
OCTOBER 5 2025.......SUNRISE 7:08 AM PDT SUNSET 6:44 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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