694  
CDUS46 KMTR 180833  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
132 AM PDT SUN AUG 18 2019  
 
   
...............................
 
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 17 2019
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1927 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 75 143 PM 82 1993 73 2 71  
1988  
MINIMUM 61 1159 PM 48 1952 56 5 55  
1945  
AVERAGE 68 64 4 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.03 1976 0.00 0.00 0.00  
MONTH TO DATE 0.00 0.02 -0.02 0.00  
SINCE OCT 1 23.31 20.46 2.85 13.86  
SINCE JAN 1 18.43 13.10 5.33 10.81  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0  
MONTH TO DATE 0.0  
SINCE JUN 1 0.0  
SINCE JUL 1 0.0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 2  
MONTH TO DATE 0 28 -28 44  
SINCE JUN 1 80 198 -118 146  
SINCE JUL 1 29 93 -64 97  
 
COOLING  
YESTERDAY 3 1 2 0  
MONTH TO DATE 69 17 52 2  
SINCE JUN 1 163 62 101 21  
SINCE JAN 1 172 81 91 32    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION S (200)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 9.1  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 1200 AM  
LOWEST 49 100 PM  
AVERAGE 67  
   
......................................................
 
 
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 73 85 1978  
MINIMUM TEMPERATURE (F) 56 48 1957  
 
 
SUNRISE AND SUNSET  
AUGUST 18 2019........SUNRISE 628 AM PDT SUNSET 758 PM PDT  
AUGUST 19 2019........SUNRISE 629 AM PDT SUNSET 757 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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