304  
CDGM40 PGUM 151604  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
204 AM CHST SUN MAY 16 2021  
   
...............................
 
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR MAY 15 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 84 3:11 PM 92 1970 89 -5 88  
1987  
2010  
MINIMUM 75 11:56 PM 74 1949 78 -3 80  
1982  
1999  
AVERAGE 80 83 -3 84  
 
PRECIPITATION (IN)  
YESTERDAY 2.11 4.06 2015 0.13 1.98 T  
MONTH TO DATE 4.98 1.97 3.01 4.13  
SINCE MAR 1 10.70 8.24 2.46 7.93  
SINCE JAN 1 15.82 17.73 -1.91 14.71  
 
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 15 18 -3 19  
MONTH TO DATE 272 270 2 279  
SINCE MAR 1 1326 1287 39 1375  
SINCE JAN 1 2290 2187 103 2313    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION E (90)  
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 10.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 10:00 PM  
LOWEST 74 12:00 AM  
AVERAGE 84  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 92 1987  
MINIMUM TEMPERATURE (F) 78 73 1982  
2005  
 
SUNRISE AND SUNSET  
MAY 16 2021...........SUNRISE 5:55 AM CHST SUNSET 6:40 PM CHST  
MAY 17 2021...........SUNRISE 5:54 AM CHST SUNSET 6:40 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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