108  
CDGM40 PGUM 031630  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
230 AM CHST SAT OCT 04 2025  
   
...............................  
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR OCTOBER 3 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 87 2:09 PM 92 1951 87 0 86  
2018  
MINIMUM 77 5:49 AM 68 1981 77 0 75  
AVERAGE 82 82 0 81  
 
PRECIPITATION (IN)  
YESTERDAY 0.12 11.35 1986 0.49 -0.37 1.34  
MONTH TO DATE 0.20 1.45 -1.25 1.38  
SINCE SEP 1 12.54 16.62 -4.08 25.76  
SINCE JAN 1 67.82 73.25 -5.43 72.98  
 
DEGREE DAYS  
HEATING  
YESTERDAY 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  
YESTERDAY 17 17 0 16  
MONTH TO DATE 53 51 2 56  
SINCE SEP 1 542 553 -11 570  
SINCE JAN 1 4671 4681 -10 4668    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SE (150)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 5.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 2:00 AM  
LOWEST 70 2:00 PM  
AVERAGE 80  
   
......................................................  
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 92 2016  
MINIMUM TEMPERATURE (F) 77 68 1981  
 
SUNRISE AND SUNSET  
OCTOBER 4 2025.......SUNRISE 6:10 AM CHST SUNSET 6:09 PM CHST  
OCTOBER 5 2025.......SUNRISE 6:10 AM CHST SUNSET 6:08 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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