154  
CDUS46 KMTR 180838  
CLISJC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
1238 AM PST MON DEC 18 2023  
   
...............................
 
 
   
..THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR DECEMBER 17 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1893 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 62 2:53 PM 72 1958 59 3 59  
MINIMUM 47 3:16 AM 26 1965 42 5 36  
AVERAGE 55 50 5 48  
 
PRECIPITATION (IN)  
YESTERDAY 0.17 0.75 1894 0.07 0.10 0.00  
1977  
MONTH TO DATE 0.24 1.23 -0.99 2.13  
SINCE OCT 1 0.91 3.09 -2.18 3.84  
SINCE JAN 1 11.19 12.42 -1.23 5.01  
 
SNOWFALL (IN)  
YESTERDAY MM 0.0 1947  
MONTH TO DATE T  
SINCE DEC 1 T  
SINCE JUL 1 T  
 
DEGREE DAYS  
HEATING  
YESTERDAY 10 15 -5 17  
MONTH TO DATE 170 239 -69 268  
SINCE DEC 1 170 239 -69 268  
SINCE JUL 1 363 604 -241 657  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 808 624 184 894    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION E (110)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 3.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 11:00 PM  
LOWEST 55 10:00 AM  
AVERAGE 69  
   
......................................................
 
 
THE SAN JOSE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 59 69 1937  
1958  
MINIMUM TEMPERATURE (F) 41 25 1908  
1924  
 
SUNRISE AND SUNSET  
DECEMBER 18 2023......SUNRISE 7:16 AM PST SUNSET 4:52 PM PST  
DECEMBER 19 2023......SUNRISE 7:17 AM PST SUNSET 4:53 PM PST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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