508  
CDGM40 PGUM 100630  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
430 PM CHST FRI SEP 10 2021  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 10 2021...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1945 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 90 1:14 PM 92 1984 87 3 88  
1987  
MINIMUM 79 6:37 AM 71 1966 76 3 79  
AVERAGE 85 82 3 84  
 
PRECIPITATION (IN)  
TODAY 0.02 9.40 2018 0.53 -0.51 T  
MONTH TO DATE 2.05 5.34 -3.29 1.50  
SINCE SEP 1 2.05 5.34 -3.29 1.50  
SINCE JAN 1 49.31 61.97 -12.66 44.58  
 
SNOWFALL (IN)  
TODAY 0.0  
MONTH TO DATE 0.0  
SINCE SEP 1 0.0  
SINCE JUL 1 0.0  
SNOW DEPTH 0  
 
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 20 16 4 19  
MONTH TO DATE 179 160 19 186  
SINCE SEP 1 179 160 19 186  
SINCE JAN 1 4428 4226 202 4557    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION E (70)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 9.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 5:00 AM  
LOWEST 65 12:00 PM  
AVERAGE 80  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 93 2016  
MINIMUM TEMPERATURE (F) 76 72 1950  
1955  
 
SUNRISE AND SUNSET  
SEPTEMBER 10 2021.....SUNRISE 6:10 AM CHST SUNSET 6:26 PM CHST  
SEPTEMBER 11 2021.....SUNRISE 6:10 AM CHST SUNSET 6:25 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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