190  
CDGM40 PGUM 291611  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
211 AM CHST MON JUN 30 2025  
   
...............................  
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JUNE 29 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 84 11:48 AM 94 1969 89 -5 86  
MINIMUM 75 1:47 AM 71 1947 78 -3 76  
AVERAGE 80 83 -3 81  
 
PRECIPITATION (IN)  
YESTERDAY 0.05 1.99 2017 0.30 -0.25 1.00  
MONTH TO DATE 13.16 6.22 6.94 7.78  
SINCE JUN 1 13.16 6.22 6.94 7.78  
SINCE JAN 1 28.89 26.43 2.46 24.65  
 
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 15 18 -3 16  
MONTH TO DATE 496 522 -26 514  
SINCE JUN 1 496 522 -26 514  
SINCE JAN 1 3060 3034 26 2995    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SE (120)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SE (140)  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED 5.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 1:00 AM  
LOWEST 74 3:00 PM  
AVERAGE 86  
   
......................................................  
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 95 1969  
MINIMUM TEMPERATURE (F) 78 72 1952  
 
SUNRISE AND SUNSET  
JUNE 30 2025..........SUNRISE 5:57 AM CHST SUNSET 6:52 PM CHST  
JULY 1 2025..........SUNRISE 5:57 AM CHST SUNSET 6:52 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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