870  
CDUS46 KMTR 160827  
CLICCR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
127 AM PDT THU OCT 16 2025  
   
...............................
 
 
   
..THE CONCORD AIRPORT CLIMATE SUMMARY FOR OCTOBER 15 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 64 2:34 PM 93 2020 79 -15 84  
MINIMUM 51 11:59 PM 45 2013 53 -2 59  
2019  
AVERAGE 58 66 -8 72  
 
PRECIPITATION (IN)  
YESTERDAY T 0.00  
MONTH TO DATE 0.46 0.00  
SINCE OCT 1 0.46 0.00  
SINCE JAN 1 2.53 9.33  
 
DEGREE DAYS  
HEATING  
YESTERDAY 7 0  
MONTH TO DATE 31 0  
SINCE SEP 1 31 1  
SINCE JUL 1 31 4  
 
COOLING  
YESTERDAY 0 7  
MONTH TO DATE 27 175  
SINCE SEP 1 276 398  
SINCE JAN 1 1027 1446    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 0 RESULTANT WIND DIRECTION SW (220)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 2.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 12:00 AM  
LOWEST 63 3:00 PM  
AVERAGE 80  
   
......................................................
 
 
THE CONCORD AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 95 2020  
MINIMUM TEMPERATURE (F) 53 47 2013  
2019  
 
SUNRISE AND SUNSET  
OCTOBER 16 2025.......SUNRISE 7:18 AM PDT SUNSET 6:29 PM PDT  
OCTOBER 17 2025.......SUNRISE 7:19 AM PDT SUNSET 6:27 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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