247  
CDUS46 KMTR 220030  
CLILVK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
530 PM PDT MON JUL 21 2025  
   
...............................  
 
   
..THE LIVERMORE AIRPORT CLIMATE SUMMARY FOR JULY 21 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 75 1:17 PM 109 2006 88 -13 81  
MINIMUM 57 3:52 AM 45 1963 57 0 57  
AVERAGE 66 72 -6 69  
 
PRECIPITATION (IN)  
TODAY 0.00 0.06 1979 0.00 0.00 0.00  
MONTH TO DATE 0.00 0.00 0.00 0.00  
SINCE OCT 1 8.68 15.01 -6.33 14.23  
SINCE JAN 1 4.49 9.78 -5.29 11.04  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 13 33 -20 2  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 1 8 -7 4  
MONTH TO DATE 126 153 -27 303  
SINCE JUN 1 218 278 -60 505  
SINCE JAN 1 275 330 -55 549    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION W (260)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 11.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 3:00 AM  
LOWEST 50 2:00 PM  
AVERAGE 69  
   
......................................................  
 
THE LIVERMORE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 111 2006  
MINIMUM TEMPERATURE (F) 57 45 1964  
 
SUNRISE AND SUNSET  
JULY 21 2025..........SUNRISE 6:02 AM PDT SUNSET 8:25 PM PDT  
JULY 22 2025..........SUNRISE 6:03 AM PDT SUNSET 8:24 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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