412  
CDUS46 KMTR 210836  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
136 AM PDT SAT SEP 21 2024  
   
...............................  
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 20 2024  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1927 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 67 1:28 PM 93 1983 75 -8 73  
1990  
2015  
MINIMUM 55 11:59 PM 48 1947 56 -1 58  
1954  
1965  
AVERAGE 61 65 -4 66  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.08 2005 0.01 -0.01 0.00  
MONTH TO DATE 0.00 0.03 -0.03 T  
SINCE OCT 1 20.23 19.60 0.63 31.42  
SINCE JAN 1 14.90 12.63 2.27 20.17  
 
SNOWFALL (IN)  
YESTERDAY MM 0.0  
MONTH TO DATE T  
SINCE SEP 1 T  
SINCE JUL 1 T  
 
DEGREE DAYS  
HEATING  
YESTERDAY 4 2 2 0  
MONTH TO DATE 58 24 34 0  
SINCE SEP 1 58 24 34 0  
SINCE JUL 1 188 126 62 47  
 
COOLING  
YESTERDAY 0 2 -2 1  
MONTH TO DATE 3 40 -37 34  
SINCE SEP 1 3 40 -37 34  
SINCE JAN 1 77 150 -73 173    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION NW (300)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 10.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 2:00 AM  
LOWEST 70 12:00 PM  
AVERAGE 82  
   
......................................................  
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 95 2003  
MINIMUM TEMPERATURE (F) 56 45 1955  
 
SUNRISE AND SUNSET  
SEPTEMBER 21 2024.....SUNRISE 6:57 AM PDT SUNSET 7:07 PM PDT  
SEPTEMBER 22 2024.....SUNRISE 6:58 AM PDT SUNSET 7:05 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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