994  
CDUS46 KMTR 260040  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
540 PM PDT MON OCT 25 2021  
   
...............................
 
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR OCTOBER 25 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
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 63 2:31 PM 87 2003 71 -8 71  
2019  
MINIMUM 57 7:14 AM 40 1953 52 5 56  
AVERAGE 60 61 -1 64  
 
PRECIPITATION (IN)  
TODAY 0.34 1.50 1979 0.04 0.30 0.00  
MONTH TO DATE 5.84 0.55 5.29 0.00  
SINCE OCT 1 5.84 0.55 5.29 0.00  
SINCE JAN 1 11.39 13.22 -1.83 4.16  
 
SNOWFALL (IN)  
TODAY MM 0.0  
MONTH TO DATE MM  
SINCE SEP 1 MM  
SINCE JUL 1 MM  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 5 4 1 1  
MONTH TO DATE 88 70 18 24  
SINCE SEP 1 119 116 3 38  
SINCE JUL 1 164 218 -54 102  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 22 33 -11 98  
SINCE SEP 1 58 89 -31 229  
SINCE JAN 1 182 199 -17 394    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 13 RESULTANT WIND DIRECTION W (260)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 15.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 2:00 AM  
LOWEST 60 12:00 PM  
AVERAGE 77  
   
......................................................
 
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 70 89 2003  
MINIMUM TEMPERATURE (F) 52 39 1954  
 
SUNRISE AND SUNSET  
OCTOBER 25 2021.......SUNRISE 7:28 AM PDT SUNSET 6:19 PM PDT  
OCTOBER 26 2021.......SUNRISE 7:29 AM PDT SUNSET 6:17 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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