340  
CDUS46 KMTR 260834  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
134 AM PDT THU APR 26 2018  
 
   
...............................
 
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR APRIL 25 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 65 111 PM 87 2004 66 -1 64  
MINIMUM 51 309 AM 41 1974 50 1 52  
AVERAGE 58 58 0 58  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.48 1994 0.03 -0.03 0.00  
MONTH TO DATE 2.24 1.15 1.09 2.20  
SINCE OCT 1 13.85 19.72 -5.87 30.87  
SINCE JAN 1 10.80 12.36 -1.56 21.92  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0  
MONTH TO DATE 0.0  
SINCE MAR 1 0.0  
SINCE JUL 1 0.0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 7 7 0 7  
MONTH TO DATE 164 212 -48 170  
SINCE MAR 1 463 526 -63 411  
SINCE JUL 1 1829 2332 -503 1988  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 1  
SINCE MAR 1 4 1 3 1  
SINCE JAN 1 4 1 3 1    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION W (280)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 10.8  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 1200 AM  
LOWEST 52 100 PM  
AVERAGE 65  
   
......................................................
 
 
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 90 2004  
MINIMUM TEMPERATURE (F) 50 42 1955  
1950  
 
 
SUNRISE AND SUNSET  
APRIL 26 2018.........SUNRISE 620 AM PDT SUNSET 755 PM PDT  
APRIL 27 2018.........SUNRISE 619 AM PDT SUNSET 756 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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