562  
CDGM40 PGUM 101620  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
220 AM CHST TUE MAY 11 2021  
   
...............................
 
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR MAY 10 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 1:29 PM 92 1984 89 -1 89  
1987  
MINIMUM 78 4:29 AM 71 1972 77 1 81  
AVERAGE 83 83 0 85  
 
PRECIPITATION (IN)  
YESTERDAY 0.04 1.20 2012 0.14 -0.10 0.08  
MONTH TO DATE 2.58 1.31 1.27 2.01  
SINCE MAR 1 8.30 7.58 0.72 5.81  
SINCE JAN 1 13.42 17.07 -3.65 12.59  
 
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 20  
MONTH TO DATE 183 180 3 190  
SINCE MAR 1 1237 1197 40 1286  
SINCE JAN 1 2201 2097 104 2224    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 11 RESULTANT WIND DIRECTION E (70)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 11.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 9:00 PM  
LOWEST 61 10:00 AM  
AVERAGE 72  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 92 1987  
MINIMUM TEMPERATURE (F) 77 72 1951  
1972  
 
SUNRISE AND SUNSET  
MAY 11 2021...........SUNRISE 5:56 AM CHST SUNSET 6:39 PM CHST  
MAY 12 2021...........SUNRISE 5:56 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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