004  
CDUS46 KMTR 170829  
CLICCR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
129 AM PDT SAT MAY 17 2025  
   
...............................  
 
   
..THE CONCORD AIRPORT CLIMATE SUMMARY FOR MAY 16 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 84 2:27 PM 102 2008 78 6 71  
MINIMUM 55 11:59 PM 45 2011 53 2 55  
AVERAGE 70 65 5 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.00  
MONTH TO DATE 0.12 0.86  
SINCE OCT 1 4.30 12.46  
SINCE JAN 1 2.04 9.33  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 2  
MONTH TO DATE 20 38  
SINCE MAR 1 447 482  
SINCE JUL 1 1991 1886  
 
COOLING  
YESTERDAY 5 0  
MONTH TO DATE 34 27  
SINCE MAR 1 45 38  
SINCE JAN 1 45 38    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION S (200)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 11.9  
 
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 80 10:00 PM  
LOWEST 34 2:00 PM  
AVERAGE 57  
   
......................................................  
 
THE CONCORD AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 101 2009  
MINIMUM TEMPERATURE (F) 53 49 2011  
 
SUNRISE AND SUNSET  
MAY 17 2025...........SUNRISE 5:56 AM PDT SUNSET 8:14 PM PDT  
MAY 18 2025...........SUNRISE 5:55 AM PDT SUNSET 8:15 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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