588  
CDUS46 KMTR 300045  
CLILVK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
545 PM PDT MON SEP 29 2025  
   
...............................  
 
   
..THE LIVERMORE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 29 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 76 3:30 PM 102 2010 83 -7 86  
MINIMUM 64 4:15 AM 39 1986 53 11 56  
AVERAGE 70 68 2 71  
 
PRECIPITATION (IN)  
TODAY 0.00 0.39 1989 0.01 -0.01 0.00  
MONTH TO DATE 0.13 0.07 0.06 0.01  
SINCE OCT 1 8.81 15.17 -6.36 14.24  
SINCE JAN 1 4.62 9.94 -5.32 11.05  
 
DEGREE DAYS  
HEATING  
TODAY 0 1 -1 0  
MONTH TO DATE 0 9 -9 2  
SINCE SEP 1 0 9 -9 2  
SINCE JUL 1 0 16 -16 4  
 
COOLING  
TODAY 5 4 1 6  
MONTH TO DATE 226 167 59 196  
SINCE SEP 1 226 167 59 196  
SINCE JAN 1 813 793 20 1118    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION W (260)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 7.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 81 4:00 AM  
LOWEST 48 3:00 PM  
AVERAGE 65  
   
......................................................  
 
THE LIVERMORE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 101 2020  
MINIMUM TEMPERATURE (F) 53 35 1950  
 
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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