186  
CDGM40 PGUM 231604  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
204 AM CHST SUN AUG 24 2025  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 23 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 86 2:41 PM 92 2019 87 -1 87  
MINIMUM 75 8:56 AM 73 1995 77 -2 80  
2005  
2022  
AVERAGE 81 82 -1 84  
 
PRECIPITATION (IN)  
YESTERDAY 0.20 2.74 2001 0.55 -0.35 0.00  
MONTH TO DATE 10.59 13.10 -2.51 10.70  
SINCE JUN 1 37.08 31.86 5.22 26.21  
SINCE JAN 1 52.81 52.07 0.74 43.08  
 
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 16 17 -1 19  
MONTH TO DATE 393 391 2 399  
SINCE JUN 1 1427 1485 -58 1476  
SINCE JAN 1 3991 3997 -6 3957    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION E (80)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (70)  
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.  
THUNDERSTORM  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 2:00 AM  
LOWEST 72 3:00 PM  
AVERAGE 83  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 92 1984  
MINIMUM TEMPERATURE (F) 76 72 1992  
1993  
1997  
 
SUNRISE AND SUNSET  
AUGUST 24 2025........SUNRISE 6:09 AM CHST SUNSET 6:37 PM CHST  
AUGUST 25 2025........SUNRISE 6:09 AM CHST SUNSET 6:37 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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