320  
CDGM40 PGUM 310645  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
445 PM CHST MON MAY 31 2021  
   
...............................
 
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR MAY 31 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 83 4:07 PM 93 1985 89 -6 85  
1988  
MINIMUM 78 12:09 PM 72 1985 78 0 76  
AVERAGE 81 83 -2 81  
 
PRECIPITATION (IN)  
TODAY 0.26 2.48 2020 0.16 0.10 2.48  
MONTH TO DATE 7.14 4.45 2.69 8.16  
SINCE MAR 1 12.86 10.72 2.14 11.96  
SINCE JAN 1 17.98 20.21 -2.23 18.74  
 
SNOWFALL (IN)  
TODAY 0.0  
MONTH TO DATE 0.0  
SINCE MAR 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 MAR 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 16 18 -2 16  
MONTH TO DATE 556 558 -2 586  
SINCE MAR 1 1610 1575 35 1682  
SINCE JAN 1 2574 2475 99 2620    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION E (110)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION E (110)  
AVERAGE WIND SPEED 11.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 6:00 AM  
LOWEST 82 8:00 AM  
AVERAGE 86  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 92 1987  
1990  
MINIMUM TEMPERATURE (F) 78 73 1961  
 
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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