545  
CDUS46 KMTR 270831  
CLILVK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
131 AM PDT SAT SEP 27 2025  
   
...............................  
 
   
..THE LIVERMORE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 26 2025  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1930 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 90 2:39 PM 103 1952 84 6 88  
2009  
MINIMUM 58 1:22 AM 41 1948 54 4 56  
AVERAGE 74 69 5 72  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.06 1998 0.00 0.00 0.00  
MONTH TO DATE 0.13 0.05 0.08 0.01  
SINCE OCT 1 8.81 15.15 -6.34 14.24  
SINCE JAN 1 4.62 9.92 -5.30 11.05  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 0 6 -6 2  
SINCE SEP 1 0 6 -6 2  
SINCE JUL 1 0 13 -13 4  
 
COOLING  
YESTERDAY 9 5 4 7  
MONTH TO DATE 212 155 57 171  
SINCE SEP 1 212 155 57 171  
SINCE JAN 1 799 781 18 1093    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION NW (300)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 3.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 7:00 AM  
LOWEST 25 2:00 PM  
AVERAGE 58  
   
......................................................  
 
THE LIVERMORE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 105 1963  
MINIMUM TEMPERATURE (F) 53 41 1948  
 
SUNRISE AND SUNSET  
SEPTEMBER 27 2025.....SUNRISE 7:00 AM PDT SUNSET 6:56 PM PDT  
SEPTEMBER 28 2025.....SUNRISE 7:01 AM PDT SUNSET 6:54 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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