621  
CDUS46 KSGX 190019  
CLISDM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN DIEGO, CA  
419 PM PST MON DEC 18 2023  
   
...............................
 
 
   
..THE SAN DIEGO/BROWN CLIMATE SUMMARY FOR DECEMBER 18 2023
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 76 2:29 PM 80 2004 66 10 63  
MINIMUM 45 4:28 AM 35 2001 43 2 38  
AVERAGE 61 55 6 51  
 
PRECIPITATION (IN)  
TODAY 0.00 0.04 2007 0.06 -0.06 0.00  
2008  
2012  
MONTH TO DATE T 1.03 -1.03 0.67  
SINCE JUL 1 2.69 2.53 0.16 3.54  
SINCE OCT 1 1.24 2.30 -1.06 3.26  
SINCE JAN 1 15.14 9.44 5.70 8.75  
 
DEGREE DAYS  
HEATING  
TODAY 4 10 -6 14  
MONTH TO DATE 114 173 -59 209  
SINCE DEC 1 114 173 -59 209  
SINCE JUL 1 226 394 -168 459  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 713 732 -19 1139    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION SE (120)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SE (130)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SE (130)  
AVERAGE WIND SPEED 4.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 54 11:00 AM  
LOWEST 20 2:00 PM  
AVERAGE 37  
   
......................................................
 
 
THE SAN DIEGO/BROWN CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 82 2005  
MINIMUM TEMPERATURE (F) 43 34 2006  
 
SUNRISE AND SUNSET  
DECEMBER 18 2023......SUNRISE 6:44 AM PST SUNSET 4:45 PM PST  
DECEMBER 19 2023......SUNRISE 6:45 AM PST SUNSET 4:45 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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