679  
CDUS46 KMTR 240845  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
1245 AM PST WED JAN 24 2018  
 
   
...............................
 
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR JANUARY 23 2018
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1927 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 57 406 PM 71 1948 57 0 54  
MINIMUM 45 559 AM 31 1949 45 0 45  
AVERAGE 51 51 0 50  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.30 2000 0.13 -0.13 0.32  
MONTH TO DATE 4.46 3.13 1.33 9.33  
SINCE OCT 1 7.51 10.49 -2.98 18.28  
SINCE JAN 1 4.46 3.13 1.33 9.33  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0  
MONTH TO DATE 0.0  
SINCE DEC 1 0.0  
SINCE JUL 1 0.0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 14 14 0 15  
MONTH TO DATE 257 343 -86 319  
SINCE DEC 1 656 789 -133 756  
SINCE JUL 1 995 1353 -358 1170  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION NE (60)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 3.8  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 600 AM  
LOWEST 71 1100 AM  
AVERAGE 82  
   
......................................................
 
 
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 72 1948  
MINIMUM TEMPERATURE (F) 45 31 1962  
 
 
SUNRISE AND SUNSET  
JANUARY 24 2018.......SUNRISE 719 AM PST SUNSET 525 PM PST  
JANUARY 25 2018.......SUNRISE 718 AM PST SUNSET 526 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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