030  
CDUS46 KMTR 260031  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
531 PM PDT TUE APR 25 2017  
 
   
...............................
 
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR APRIL 25 2017
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1927 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 64 144 PM 87 2004 66 -2 63  
MINIMUM 52 305 AM 41 1974 50 2 47  
AVERAGE 58 58 0 55  
 
PRECIPITATION (IN)  
TODAY 0.00 0.48 1994 0.03 -0.03 0.00  
MONTH TO DATE 2.20 1.15 1.05 0.78  
SINCE OCT 1 30.87 19.72 11.15 17.14  
SINCE JAN 1 21.92 12.36 9.56 12.35  
 
SNOWFALL (IN)  
TODAY 0.0 0.0  
MONTH TO DATE 0.0  
SINCE MAR 1 0.0  
SINCE JUL 1 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 7 7 0 10  
MONTH TO DATE 170 212 -42 108  
SINCE MAR 1 411 526 -115 325  
SINCE JUL 1 1988 2332 -344 1723  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 1 0 1 20  
SINCE MAR 1 1 1 0 20  
SINCE JAN 1 1 1 0 20    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 19 RESULTANT WIND DIRECTION W (270)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 19.0  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 1200 AM  
LOWEST 56 1100 AM  
AVERAGE 70  
   
......................................................
 
 
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 90 2004  
MINIMUM TEMPERATURE (F) 50 42 1955  
1950  
 
 
SUNRISE AND SUNSET  
APRIL 25 2017.........SUNRISE 621 AM PDT SUNSET 755 PM PDT  
APRIL 26 2017.........SUNRISE 620 AM PDT SUNSET 755 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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