793  
CDGM40 PGUM 081607  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
207 AM CHST SAT AUG 09 2025  
   
...............................  
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 8 2025...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1945 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 87 3:54 PM 93 1991 87 0 88  
MINIMUM 78 5:54 AM 71 1967 77 1 77  
AVERAGE 83 82 1 83  
 
PRECIPITATION (IN)  
YESTERDAY T 2.61 2012 0.57 -0.57 0.01  
MONTH TO DATE 4.33 4.30 0.03 6.14  
SINCE JUN 1 30.82 23.06 7.76 21.65  
SINCE JAN 1 46.55 43.27 3.28 38.52  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 18 17 1 18  
MONTH TO DATE 137 136 1 137  
SINCE JUN 1 1171 1230 -59 1214  
SINCE JAN 1 3735 3742 -7 3695    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION E (110)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED 5.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 3:00 AM  
LOWEST 70 4:00 PM  
AVERAGE 82  
   
......................................................  
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 91 1986  
1987  
1994  
MINIMUM TEMPERATURE (F) 77 73 1952  
 
SUNRISE AND SUNSET  
AUGUST 9 2025........SUNRISE 6:07 AM CHST SUNSET 6:45 PM CHST  
AUGUST 10 2025........SUNRISE 6:07 AM CHST SUNSET 6:45 PM CHST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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