974  
CDGM40 PGUM 301602  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
202 AM CHST MON MAY 31 2021  
   
...............................
 
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR MAY 30 2021
 
 
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)  
YESTERDAY  
MAXIMUM 88 12:15 PM 94 1971 89 -1 85  
MINIMUM 77 8:17 PM 72 1985 78 -1 77  
AVERAGE 83 83 0 81  
 
PRECIPITATION (IN)  
YESTERDAY 0.40 1.51 1960 0.17 0.23 0.48  
MONTH TO DATE 6.88 4.29 2.59 5.68  
SINCE MAR 1 12.60 10.56 2.04 9.48  
SINCE JAN 1 17.72 20.05 -2.33 16.26  
 
SNOWFALL (IN)  
YESTERDAY 0.0  
MONTH TO DATE 0.0  
SINCE MAR 1 0.0  
SINCE JUL 1 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 18 18 0 16  
MONTH TO DATE 540 540 0 570  
SINCE MAR 1 1594 1557 37 1666  
SINCE JAN 1 2558 2457 101 2604    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 13 RESULTANT WIND DIRECTION E (90)  
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 12.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 1:00 PM  
LOWEST 67 11:00 AM  
AVERAGE 79  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 93 1985  
1988  
MINIMUM TEMPERATURE (F) 78 72 1985  
 
SUNRISE AND SUNSET  
MAY 31 2021...........SUNRISE 5:53 AM CHST SUNSET 6:44 PM CHST  
JUNE 1 2021..........SUNRISE 5:53 AM CHST SUNSET 6:45 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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