227  
CDGM40 PGUM 210636  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
436 PM CHST SAT AUG 21 2021  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 21 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 89 2:05 PM 91 1969 87 2 89  
1971  
MINIMUM 78 5:45 AM 71 1960 76 2 78  
1991  
AVERAGE 84 82 2 84  
 
PRECIPITATION (IN)  
TODAY 0.01 5.02 1976 0.55 -0.54 T  
MONTH TO DATE 10.02 12.00 -1.98 3.61  
SINCE JUN 1 23.86 30.76 -6.90 15.27  
SINCE JAN 1 41.84 50.97 -9.13 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 19  
MONTH TO DATE 368 345 23 396  
SINCE JUN 1 1515 1423 92 1582  
SINCE JAN 1 4088 3898 190 4202    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION E (80)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 7.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88 12:00 AM  
LOWEST 68 11:00 AM  
AVERAGE 78  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 92 1966  
MINIMUM TEMPERATURE (F) 76 70 1986  
 
SUNRISE AND SUNSET  
AUGUST 21 2021........SUNRISE 6:09 AM CHST SUNSET 6:39 PM CHST  
AUGUST 22 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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