230  
CDUS46 KMTR 010029  
CLICCR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
529 PM PDT SAT SEP 30 2023  
   
...............................
 
 
   
..THE CONCORD AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 30 2023
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1999 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 72 1:57 PM 97 2012 83 -11 91  
MINIMUM 60 8:22 AM 46 2007 56 4 56  
AVERAGE 66 69 -3 74  
 
PRECIPITATION (IN)  
TODAY 0.01 0.00  
MONTH TO DATE 0.01 0.17  
SINCE OCT 1 24.75 11.33  
SINCE JAN 1 15.47 1.51  
 
DEGREE DAYS  
HEATING  
TODAY 0 0  
MONTH TO DATE 26 0  
SINCE SEP 1 26 0  
SINCE JUL 1 30 2  
 
COOLING  
TODAY 1 9  
MONTH TO DATE 131 292  
SINCE SEP 1 131 292  
SINCE JAN 1 900 1243    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 8.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 81 2:00 AM  
LOWEST 53 2:00 PM  
AVERAGE 67  
   
......................................................
 
 
THE CONCORD AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 99 2001  
2012  
MINIMUM TEMPERATURE (F) 56 46 2019  
 
SUNRISE AND SUNSET  
SEPTEMBER 30 2023.....SUNRISE 7:03 AM PDT SUNSET 6:53 PM PDT  
OCTOBER 1 2023.......SUNRISE 7:04 AM PDT SUNSET 6:51 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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