158  
CDGM40 PGUM 200638  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
438 PM CHST THU MAY 20 2021  
   
...............................
 
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR MAY 20 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 89 1:25 PM 92 2012 89 0 89  
MINIMUM 76 3:59 AM 73 1965 78 -2 80  
AVERAGE 83 83 0 85  
 
PRECIPITATION (IN)  
TODAY 0.04 3.41 1976 0.15 -0.11 T  
MONTH TO DATE 5.37 2.67 2.70 5.02  
SINCE MAR 1 11.09 8.94 2.15 8.82  
SINCE JAN 1 16.21 18.43 -2.22 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 20  
MONTH TO DATE 360 360 0 376  
SINCE MAR 1 1414 1377 37 1472  
SINCE JAN 1 2378 2277 101 2410    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION E (70)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 10.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88 6:00 AM  
LOWEST 61 2:00 PM  
AVERAGE 75  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 92 1971  
2013  
MINIMUM TEMPERATURE (F) 78 74 1987  
1991  
1992  
 
SUNRISE AND SUNSET  
MAY 20 2021...........SUNRISE 5:54 AM CHST SUNSET 6:41 PM CHST  
MAY 21 2021...........SUNRISE 5:54 AM CHST SUNSET 6:41 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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