339  
CDUS46 KMTR 220041  
CLILVK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
541 PM PDT WED MAY 21 2025  
   
...............................  
 
   
..THE LIVERMORE AIRPORT CLIMATE SUMMARY FOR MAY 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 88 2:00 PM 100 2001 76 12 85  
MINIMUM 48 MM 38 1974 50 -2 48  
AVERAGE 68 63 5 67  
 
PRECIPITATION (IN)  
TODAY 0.00 0.63 1957 0.02 -0.02 0.00  
MONTH TO DATE 0.07 0.43 -0.36 0.51  
SINCE OCT 1 8.68 14.74 -6.06 14.23  
SINCE JAN 1 4.49 9.51 -5.02 11.04  
 
DEGREE DAYS  
HEATING  
TODAY 0 4 -4 0  
MONTH TO DATE 53 97 -44 57  
SINCE MAR 1 617 704 -87 606  
SINCE JUL 1 2327 2645 -318 2183  
 
COOLING  
TODAY 3 2 1 2  
MONTH TO DATE 23 26 -3 21  
SINCE MAR 1 24 34 -10 26  
SINCE JAN 1 24 34 -10 26    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 0 RESULTANT WIND DIRECTION W (250)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 2.9  
 
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 77 5:00 AM  
LOWEST 18 1:00 PM  
AVERAGE 48  
   
......................................................  
 
THE LIVERMORE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 76 99 2000  
MINIMUM TEMPERATURE (F) 50 38 1964  
 
SUNRISE AND SUNSET  
MAY 21 2025...........SUNRISE 5:53 AM PDT SUNSET 8:16 PM PDT  
MAY 22 2025...........SUNRISE 5:52 AM PDT SUNSET 8:16 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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