674  
CDUS46 KMTR 290832  
CLILVK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
132 AM PDT MON SEP 29 2025  
   
...............................
 
 
   
..THE LIVERMORE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 28 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 76 1:10 PM 105 2010 83 -7 89  
MINIMUM 63 12:47 AM 42 1986 53 10 56  
AVERAGE 70 68 2 73  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.79 1976 0.00 0.00 0.00  
MONTH TO DATE 0.13 0.06 0.07 0.01  
SINCE OCT 1 8.81 15.16 -6.35 14.24  
SINCE JAN 1 4.62 9.93 -5.31 11.05  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 0 8 -8 2  
SINCE SEP 1 0 8 -8 2  
SINCE JUL 1 0 15 -15 4  
 
COOLING  
YESTERDAY 5 4 1 8  
MONTH TO DATE 221 163 58 190  
SINCE SEP 1 221 163 58 190  
SINCE JAN 1 808 789 19 1112    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION W (250)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 9.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 12:00 AM  
LOWEST 52 1:00 PM  
AVERAGE 68  
   
......................................................
 
 
THE LIVERMORE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 102 2010  
MINIMUM TEMPERATURE (F) 53 39 1986  
 
SUNRISE AND SUNSET  
SEPTEMBER 29 2025.....SUNRISE 7:01 AM PDT SUNSET 6:53 PM PDT  
SEPTEMBER 30 2025.....SUNRISE 7:02 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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