038  
CDUS46 KMTR 180038  
CLILVK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
538 PM PDT WED SEP 17 2025  
   
...............................  
 
   
..THE LIVERMORE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 17 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 99R 3:19 PM 99 1991 85 14 74  
MINIMUM 60 6:05 AM 44 1959 55 5 54  
AVERAGE 80 70 10 64  
 
PRECIPITATION (IN)  
TODAY 0.00 0.22 1940 0.00 0.00 0.00  
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 2  
SINCE SEP 1 0 0 0 2  
SINCE JUL 1 0 7 -7 4  
 
COOLING  
TODAY 15 6 9 0  
MONTH TO DATE 128 109 19 104  
SINCE SEP 1 128 109 19 104  
SINCE JAN 1 715 735 -20 1026    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION SW (240)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 2.6  
 
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 65 3:00 AM  
LOWEST 19 2:00 PM  
AVERAGE 42  
   
......................................................  
 
THE LIVERMORE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 103 1939  
MINIMUM TEMPERATURE (F) 55 41 1978  
 
SUNRISE AND SUNSET  
SEPTEMBER 17 2025.....SUNRISE 6:51 AM PDT SUNSET 7:11 PM PDT  
SEPTEMBER 18 2025.....SUNRISE 6:52 AM PDT SUNSET 7:10 PM PDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab CA Page
Main Text Page