602  
CDGM40 PGUM 200631  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
431 PM CHST FRI AUG 20 2021  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 20 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 88 3:50 PM 92 1981 87 1 86  
MINIMUM 79 6:51 AM 71 1960 76 3 78  
AVERAGE 84 82 2 82  
 
PRECIPITATION (IN)  
TODAY T 4.17 1996 0.57 -0.57 0.05  
MONTH TO DATE 10.01 11.45 -1.44 3.61  
SINCE JUN 1 23.85 30.21 -6.36 15.27  
SINCE JAN 1 41.83 50.42 -8.59 34.01  
 
SNOWFALL (IN)  
TODAY 0.0  
MONTH TO DATE 0.0  
SINCE JUN 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 JUN 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 19 16 3 17  
MONTH TO DATE 350 329 21 377  
SINCE JUN 1 1497 1407 90 1563  
SINCE JAN 1 4070 3882 188 4183    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION E (90)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION E (110)  
AVERAGE WIND SPEED 7.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 91 2:00 AM  
LOWEST 68 2:00 PM  
AVERAGE 80  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 91 1969  
1971  
MINIMUM TEMPERATURE (F) 76 71 1960  
1991  
 
SUNRISE AND SUNSET  
AUGUST 20 2021........SUNRISE 6:09 AM CHST SUNSET 6:40 PM CHST  
AUGUST 21 2021........SUNRISE 6:09 AM CHST SUNSET 6:39 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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