790  
CDUS46 KMTR 120032  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
532 PM PDT SUN APR 11 2021  
   
...............................
 
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR APRIL 11 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1927 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 68 MM 84 1988 64 4 62  
MINIMUM 48 MM 38 1953 49 -1 52  
1967  
AVERAGE 58 56 2 57  
 
PRECIPITATION (IN)  
TODAY 0.00 0.92 2010 0.04 -0.04 0.00  
MONTH TO DATE 0.00 0.60 -0.60 1.36  
SINCE OCT 1 7.25 19.17 -11.92 8.87  
SINCE JAN 1 5.55 11.81 -6.26 3.86  
 
SNOWFALL (IN)  
TODAY MM 0.0  
MONTH TO DATE MM  
SINCE MAR 1 MM  
SINCE JUL 1 MM  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 7 9 -2 8  
MONTH TO DATE 82 99 -17 113  
SINCE MAR 1 391 413 -22 418  
SINCE JUL 1 1770 2219 -449 1799  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 4 0 4 0  
SINCE MAR 1 7 1 6 0  
SINCE JAN 1 7 1 6 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION NW (300)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 7.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 5:00 AM  
LOWEST 45 1:00 PM  
AVERAGE 61  
   
......................................................
 
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 64 88 1947  
MINIMUM TEMPERATURE (F) 49 39 1956  
1983  
 
SUNRISE AND SUNSET  
APRIL 11 2021.........SUNRISE 6:40 AM PDT SUNSET 7:42 PM PDT  
APRIL 12 2021.........SUNRISE 6:38 AM PDT SUNSET 7:43 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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