197  
CDUS46 KMTR 230831  
CLIHWD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
131 AM PDT SAT AUG 23 2025  
   
...............................  
 
   
..THE HAYWARD AIRPORT CLIMATE SUMMARY FOR AUGUST 22 2025  
 
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)  
YESTERDAY  
MAXIMUM 76 2:12 PM 92 1999 77 -1 74  
MINIMUM 58 11:59 PM 55 2006 58 0 63  
AVERAGE 67 68 -1 69  
 
PRECIPITATION (IN)  
YESTERDAY 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  
YESTERDAY 0 0  
MONTH TO DATE 6 6  
SINCE JUN 1 118 33  
SINCE JUL 1 39 10  
 
COOLING  
YESTERDAY 2 4  
MONTH TO DATE 46 70  
SINCE JUN 1 75 346  
SINCE JAN 1 123 377    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION W (290)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 7.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 2:00 AM  
LOWEST 54 2:00 PM  
AVERAGE 74  
   
......................................................  
 
THE HAYWARD AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 92 2023  
MINIMUM TEMPERATURE (F) 58 54 2005  
2012  
 
SUNRISE AND SUNSET  
AUGUST 23 2025........SUNRISE 6:31 AM PDT SUNSET 7:50 PM PDT  
AUGUST 24 2025........SUNRISE 6:32 AM PDT SUNSET 7:48 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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