739  
CDGM40 PGUM 170640  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
440 PM CHST TUE JUN 17 2025  
   
...............................  
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JUNE 17 2025  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 86 2:00 PM 92 1994 89 -3 88  
2016  
2021  
MINIMUM 77 2:55 AM 72 1989 78 -1 80  
AVERAGE 82 84 -2 84  
 
PRECIPITATION (IN)  
TODAY 0.06 3.69 1985 0.20 -0.14 0.03  
MONTH TO DATE 4.85 3.24 1.61 5.07  
SINCE JUN 1 4.85 3.24 1.61 5.07  
SINCE JAN 1 20.58 23.45 -2.87 21.94  
 
DEGREE DAYS  
HEATING  
TODAY 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  
TODAY 17 18 -1 19  
MONTH TO DATE 297 306 -9 293  
SINCE JUN 1 297 306 -9 293  
SINCE JAN 1 2861 2818 43 2774    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION E (80)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 8.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 2:00 AM  
LOWEST 70 2:00 PM  
AVERAGE 80  
   
......................................................  
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 93 1966  
1993  
MINIMUM TEMPERATURE (F) 78 72 1967  
 
SUNRISE AND SUNSET  
JUNE 17 2025..........SUNRISE 5:54 AM CHST SUNSET 6:49 PM CHST  
JUNE 18 2025..........SUNRISE 5:54 AM CHST SUNSET 6:50 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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