851  
CDGM40 PGUM 120635  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
435 PM CHST SAT DEC 12 2020  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR DECEMBER 12 2020...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1945 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 85 1:23 PM 91 1984 86 -1 88  
MINIMUM 73 4:38 AM 70 1962 77 -4 79  
1969  
AVERAGE 79 81 -2 84  
 
PRECIPITATION (IN)  
TODAY T 4.47 2016 0.19 -0.19 0.10  
MONTH TO DATE 6.05 2.63 3.42 0.44  
SINCE DEC 1 6.05 2.63 3.42 0.44  
SINCE JAN 1 87.17 94.29 -7.12 90.94  
 
SNOWFALL (IN)  
TODAY 0.0  
MONTH TO DATE 0.0  
SINCE DEC 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 DEC 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 14 16 -2 19  
MONTH TO DATE 195 200 -5 202  
SINCE DEC 1 195 200 -5 202  
SINCE JAN 1 6148 5701 447 6094    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED MM RESULTANT WIND DIRECTION MM  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED MM  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER MM  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST MM  
LOWEST MM  
AVERAGE MM  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 86 90 1984  
2014  
MINIMUM TEMPERATURE (F) 77 71 1972  
 
SUNRISE AND SUNSET  
DECEMBER 12 2020......SUNRISE 6:34 AM CHST SUNSET 5:55 PM CHST  
DECEMBER 13 2020......SUNRISE 6:35 AM CHST SUNSET 5:55 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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