258  
CDGM40 PGUM 041613  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
213 AM CHST FRI SEP 05 2025  
   
...............................  
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 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 12:09 PM 91 2016 87 0 89  
MINIMUM 77 12:00 AM 68 1979 76 1 77  
AVERAGE 82 82 0 83  
 
PRECIPITATION (IN)  
YESTERDAY 0.04 6.92 1990 0.54 -0.50 0.21  
MONTH TO DATE 2.95 1.61 1.34 0.29  
SINCE SEP 1 2.95 1.61 1.34 0.29  
SINCE JAN 1 58.23 58.24 -0.01 47.51  
 
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 18  
MONTH TO DATE 50 51 -1 54  
SINCE SEP 1 50 51 -1 54  
SINCE JAN 1 4180 4179 1 4152    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION E (90)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED 6.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 91 5:00 AM  
LOWEST 74 12:00 PM  
AVERAGE 83  
   
......................................................  
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 90 2009  
2016  
2017  
MINIMUM TEMPERATURE (F) 76 67 1979  
1986  
 
SUNRISE AND SUNSET  
SEPTEMBER 4 2025.....SUNRISE 6:10 AM CHST SUNSET 6:30 PM CHST  
SEPTEMBER 5 2025.....SUNRISE 6:10 AM CHST SUNSET 6:29 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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