635  
CDUS46 KMTR 200827  
CLILVK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
127 AM PDT SUN APR 20 2025  
   
...............................  
 
   
..THE LIVERMORE AIRPORT CLIMATE SUMMARY FOR APRIL 19 2025  
 
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)  
YESTERDAY  
MAXIMUM 70 3:06 PM 91 1954 70 0 74  
MINIMUM 43 4:12 AM 32 1979 45 -2 48  
AVERAGE 57 58 -1 61  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.38 1981 0.03 -0.03 0.00  
MONTH TO DATE 0.19 0.82 -0.63 1.36  
SINCE OCT 1 8.57 14.05 -5.48 13.71  
SINCE JAN 1 4.38 8.82 -4.44 10.52  
 
DEGREE DAYS  
HEATING  
YESTERDAY 8 8 0 4  
MONTH TO DATE 137 174 -37 158  
SINCE MAR 1 494 532 -38 495  
SINCE JUL 1 2204 2473 -269 2072  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 2  
SINCE MAR 1 1 0 1 2  
SINCE JAN 1 1 0 1 2    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION W (290)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 6.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 12:00 AM  
LOWEST 44 3:00 PM  
AVERAGE 69  
   
......................................................  
 
THE LIVERMORE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 70 93 2009  
MINIMUM TEMPERATURE (F) 45 32 1972  
 
SUNRISE AND SUNSET  
APRIL 20 2025.........SUNRISE 6:25 AM PDT SUNSET 7:48 PM PDT  
APRIL 21 2025.........SUNRISE 6:24 AM PDT SUNSET 7:49 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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