584  
CDGM40 PGUM 210638  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
438 PM CHST FRI MAY 21 2021  
   
...............................
 
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR MAY 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 87 2:05 PM 92 1971 89 -2 90  
2013  
MINIMUM 78 6:14 AM 74 1987 78 0 82  
1991  
1992  
AVERAGE 83 83 0 86  
 
PRECIPITATION (IN)  
TODAY 0.09 7.91 1976 0.16 -0.07 0.00  
MONTH TO DATE 5.46 2.83 2.63 5.02  
SINCE MAR 1 11.18 9.10 2.08 8.82  
SINCE JAN 1 16.30 18.59 -2.29 15.60  
 
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 18 18 0 21  
MONTH TO DATE 378 378 0 397  
SINCE MAR 1 1432 1395 37 1493  
SINCE JAN 1 2396 2295 101 2431    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION E (90)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 9.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 3:00 PM  
LOWEST 63 2:00 PM  
AVERAGE 74  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 93 2013  
MINIMUM TEMPERATURE (F) 78 73 1972  
 
SUNRISE AND SUNSET  
MAY 21 2021...........SUNRISE 5:54 AM CHST SUNSET 6:41 PM CHST  
MAY 22 2021...........SUNRISE 5:53 AM CHST SUNSET 6:42 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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