014  
CDUS46 KMTR 210043  
CLIHWD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
443 PM PST WED DEC 20 2023  
   
...............................
 
 
   
..THE HAYWARD AIRPORT CLIMATE SUMMARY FOR DECEMBER 20 2023
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 63 1:52 AM 71 1999 59 4 55  
MINIMUM 55 8:57 AM 33 1998 43 12 43  
AVERAGE 59 51 8 49  
 
PRECIPITATION (IN)  
TODAY 0.58 0.01  
MONTH TO DATE 2.37 3.21  
SINCE OCT 1 3.51 5.46  
SINCE JAN 1 21.83 7.95  
 
DEGREE DAYS  
HEATING  
TODAY 6 16  
MONTH TO DATE 212 298  
SINCE DEC 1 212 298  
SINCE JUL 1 478 805  
 
COOLING  
TODAY 0 0  
MONTH TO DATE 0 0  
SINCE DEC 1 0 0  
SINCE JAN 1 448 430    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION SE (140)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 8.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 10:00 AM  
LOWEST 70 2:00 AM  
AVERAGE 80  
   
......................................................
 
 
THE HAYWARD AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 59 73 1999  
MINIMUM TEMPERATURE (F) 43 29 1998  
 
SUNRISE AND SUNSET  
DECEMBER 20 2023......SUNRISE 7:19 AM PST SUNSET 4:53 PM PST  
DECEMBER 21 2023......SUNRISE 7:20 AM PST SUNSET 4:53 PM PST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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