958  
CDUS46 KMTR 290830  
CLICCR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
130 AM PDT FRI SEP 29 2023  
   
...............................
 
 
   
..THE CONCORD AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 28 2023
 
 
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)  
YESTERDAY  
MAXIMUM 85 3:04 PM 103 2010 83 2 84  
MINIMUM 57 6:58 AM 49 2013 56 1 57  
AVERAGE 71 70 1 71  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE T 0.17  
SINCE OCT 1 24.74 11.33  
SINCE JAN 1 15.46 1.51  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0  
MONTH TO DATE 26 0  
SINCE SEP 1 26 0  
SINCE JUL 1 30 2  
 
COOLING  
YESTERDAY 6 6  
MONTH TO DATE 127 275  
SINCE SEP 1 127 275  
SINCE JAN 1 896 1226    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 6.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 7:00 AM  
LOWEST 31 2:00 PM  
AVERAGE 60  
   
......................................................
 
 
THE CONCORD AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 100 2010  
MINIMUM TEMPERATURE (F) 56 45 2007  
 
SUNRISE AND SUNSET  
SEPTEMBER 29 2023.....SUNRISE 7:02 AM PDT SUNSET 6:54 PM PDT  
SEPTEMBER 30 2023.....SUNRISE 7:03 AM PDT SUNSET 6:53 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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