373  
CDGM40 PGUM 120628  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
428 PM CHST SAT JUL 12 2025  
   
...............................
 
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JULY 12 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 83 7:57 AM 92 1979 88 -5 88  
1993  
MINIMUM 76 10:20 AM 74 2000 77 -1 77  
2008  
2014  
AVERAGE 80 83 -3 83  
 
PRECIPITATION (IN)  
TODAY 0.54 2.27 1981 0.36 0.18 0.09  
MONTH TO DATE 4.94 3.92 1.02 2.68  
SINCE JUN 1 18.44 10.43 8.01 10.68  
SINCE JAN 1 34.17 30.64 3.53 27.55  
 
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 15 18 -3 18  
MONTH TO DATE 205 216 -11 210  
SINCE JUN 1 714 768 -54 741  
SINCE JAN 1 3278 3280 -2 3222    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION SE (120)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (160)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SE (150)  
AVERAGE WIND SPEED 6.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 10:00 AM  
LOWEST 85 8:00 AM  
AVERAGE 91  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 91 1989  
1990  
2013  
MINIMUM TEMPERATURE (F) 77 71 1950  
 
SUNRISE AND SUNSET  
JULY 12 2025..........SUNRISE 6:01 AM CHST SUNSET 6:52 PM CHST  
JULY 13 2025..........SUNRISE 6:01 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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