498  
CDUS46 KMTR 050031  
CLICCR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
531 PM PDT SAT OCT 04 2025  
   
...............................  
 
   
..THE CONCORD AIRPORT CLIMATE SUMMARY FOR OCTOBER 4 2025  
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 80 MM 97 2024 82 -2 97  
MINIMUM 56 MM 46 2009 55 1 59  
AVERAGE 68 68 0 78  
 
PRECIPITATION (IN)  
TODAY 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  
TODAY 0 0  
MONTH TO DATE 0 0  
SINCE SEP 1 0 1  
SINCE JUL 1 0 4  
 
COOLING  
TODAY 3 13  
MONTH TO DATE 10 66  
SINCE SEP 1 259 289  
SINCE JAN 1 1010 1337    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION S (200)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED 6.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 4:00 AM  
LOWEST 31 2:00 PM  
AVERAGE 61  
   
......................................................  
 
THE CONCORD AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 101 2024  
MINIMUM TEMPERATURE (F) 55 45 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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