649  
CDGM40 PGUM 150625  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
425 PM CHST TUE SEP 15 2026  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 15 2026...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1945 TO 2026  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 86 2:51 PM 91 1969 87 -1 86  
1983  
1984  
MINIMUM 76 6:48 AM 71 1956 76 0 74  
AVERAGE 81 82 -1 80  
 
PRECIPITATION (IN)  
TODAY 0.40 8.20 2019 0.50 -0.10 0.75  
MONTH TO DATE 8.82 7.83 0.99 6.88  
SINCE SEP 1 8.82 7.83 0.99 6.88  
SINCE JAN 1 100.85 64.46 36.39 62.16  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 16 17 -1 15  
MONTH TO DATE 254 255 -1 250  
SINCE SEP 1 254 255 -1 250  
SINCE JAN 1 4248 4383 -135 4379    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION NW (310)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED 4.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1:00 AM  
LOWEST 80 3:00 PM  
AVERAGE 90  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 91 1983  
1984  
2016  
MINIMUM TEMPERATURE (F) 76 71 1996  
 
SUNRISE AND SUNSET  
SEPTEMBER 15 2026.....SUNRISE 6:10 AM CHST SUNSET 6:22 PM CHST  
SEPTEMBER 16 2026.....SUNRISE 6:10 AM CHST SUNSET 6:22 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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