746  
CDUS46 KMTR 190035  
CLIHWD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
535 PM PDT MON AUG 18 2025  
   
...............................  
 
   
..THE HAYWARD AIRPORT CLIMATE SUMMARY FOR AUGUST 18 2025  
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 74 2:14 PM 91 2020 77 -3 76  
MINIMUM 59 4:39 AM 56 2007 58 1 63  
2018  
2022  
AVERAGE 67 68 -1 70  
 
PRECIPITATION (IN)  
TODAY 0.00 0.00  
MONTH TO DATE 0.00 0.00  
SINCE OCT 1 14.64 21.84  
SINCE JAN 1 7.43 16.98  
 
DEGREE DAYS  
HEATING  
TODAY 0 0  
MONTH TO DATE 6 6  
SINCE JUN 1 118 33  
SINCE JUL 1 39 10  
 
COOLING  
TODAY 2 5  
MONTH TO DATE 30 52  
SINCE JUN 1 59 328  
SINCE JAN 1 107 359    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION W (270)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 8.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 3:00 AM  
LOWEST 44 3:00 PM  
AVERAGE 67  
   
......................................................  
 
THE HAYWARD AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 84 2020  
MINIMUM TEMPERATURE (F) 58 55 2012  
2018  
 
SUNRISE AND SUNSET  
AUGUST 18 2025........SUNRISE 6:27 AM PDT SUNSET 7:57 PM PDT  
AUGUST 19 2025........SUNRISE 6:28 AM PDT SUNSET 7:55 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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