908  
CDUS46 KMTR 240031  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
531 PM PDT SAT SEP 23 2023  
   
...............................
 
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 23 2023
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1927 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 70 12:41 PM 92 1978 75 -5 83  
MINIMUM 55 3:30 AM 45 1972 56 -1 58  
AVERAGE 63 65 -2 71  
 
PRECIPITATION (IN)  
TODAY 0.00 0.31 1982 0.01 -0.01 0.00  
MONTH TO DATE T 0.04 -0.04 0.27  
SINCE OCT 1 31.42 19.61 11.81 18.45  
SINCE JAN 1 20.17 12.64 7.53 2.17  
 
SNOWFALL (IN)  
TODAY MM 0.0  
MONTH TO DATE T  
SINCE SEP 1 T  
SINCE JUL 1 T  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 2 2 0 0  
MONTH TO DATE 3 30 -27 6  
SINCE SEP 1 3 30 -27 6  
SINCE JUL 1 50 132 -82 67  
 
COOLING  
TODAY 0 2 -2 6  
MONTH TO DATE 35 46 -11 99  
SINCE SEP 1 35 46 -11 99  
SINCE JAN 1 174 156 18 252    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION W (280)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 7.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 80 7:00 AM  
LOWEST 53 12:00 PM  
AVERAGE 67  
   
......................................................
 
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 94 2019  
MINIMUM TEMPERATURE (F) 56 48 1945  
1955  
 
SUNRISE AND SUNSET  
SEPTEMBER 23 2023.....SUNRISE 6:58 AM PDT SUNSET 7:05 PM PDT  
SEPTEMBER 24 2023.....SUNRISE 6:59 AM PDT SUNSET 7:03 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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