248  
CDUS46 KMTR 170046  
CLILVK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
546 PM PDT TUE SEP 16 2025  
   
...............................  
 
   
..THE LIVERMORE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 16 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 97 2:31 PM 105 1971 86 11 72  
MINIMUM 60 5:50 AM 43 1970 55 5 55  
AVERAGE 79 70 9 64  
 
PRECIPITATION (IN)  
TODAY 0.00 0.52 1989 0.00 0.00 T  
MONTH TO DATE 0.02 0.02 0.00 T  
SINCE OCT 1 8.70 15.12 -6.42 14.23  
SINCE JAN 1 4.51 9.89 -5.38 11.04  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 1  
MONTH TO DATE 0 0 0 1  
SINCE SEP 1 0 0 0 1  
SINCE JUL 1 0 7 -7 3  
 
COOLING  
TODAY 14 6 8 0  
MONTH TO DATE 113 103 10 104  
SINCE SEP 1 113 103 10 104  
SINCE JAN 1 700 729 -29 1026    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION W (270)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 3.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 73 7:00 AM  
LOWEST 17 3:00 PM  
AVERAGE 45  
   
......................................................  
 
THE LIVERMORE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 99 1991  
MINIMUM TEMPERATURE (F) 55 44 1959  
 
SUNRISE AND SUNSET  
SEPTEMBER 16 2025.....SUNRISE 6:50 AM PDT SUNSET 7:13 PM PDT  
SEPTEMBER 17 2025.....SUNRISE 6:51 AM PDT SUNSET 7:11 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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