568  
CDUS46 KMTR 010045  
CLILVK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
545 PM PDT TUE SEP 30 2025  
   
...............................
 
 
   
..THE LIVERMORE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 30 2025
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 78 12:59 PM 101 2020 83 -5 96  
MINIMUM 60 5:36 AM 35 1950 53 7 53  
AVERAGE 69 68 1 75  
 
PRECIPITATION (IN)  
TODAY T 1.02 1983 0.01 -0.01 0.00  
MONTH TO DATE 0.13 0.08 0.05 0.01  
SINCE OCT 1 8.81 15.18 -6.37 14.24  
SINCE JAN 1 4.62 9.95 -5.33 11.05  
 
DEGREE DAYS  
HEATING  
TODAY 0 1 -1 0  
MONTH TO DATE 0 10 -10 2  
SINCE SEP 1 0 10 -10 2  
SINCE JUL 1 0 17 -17 4  
 
COOLING  
TODAY 4 4 0 10  
MONTH TO DATE 230 170 60 206  
SINCE SEP 1 230 170 60 206  
SINCE JAN 1 817 796 21 1128    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION SW (230)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 8.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 4:00 AM  
LOWEST 39 2:00 PM  
AVERAGE 65  
   
......................................................
 
 
THE LIVERMORE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 103 2024  
MINIMUM TEMPERATURE (F) 53 36 1971  
 
SUNRISE AND SUNSET  
SEPTEMBER 30 2025.....SUNRISE 7:02 AM PDT SUNSET 6:51 PM PDT  
OCTOBER 1 2025.......SUNRISE 7:03 AM PDT SUNSET 6:50 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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