379  
CDGM40 PGUM 221604  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
204 AM CHST WED DEC 23 2020  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR DECEMBER 22 2020...  
 
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)  
YESTERDAY  
MAXIMUM 87 2:55 PM 89 2012 85 2 85  
2014  
2015  
MINIMUM 80 11:31 PM 71 2004 77 3 77  
AVERAGE 84 81 3 81  
 
PRECIPITATION (IN)  
YESTERDAY T 1.40 1947 0.17 -0.17 0.05  
MONTH TO DATE 7.23 4.40 2.83 1.38  
SINCE DEC 1 7.23 4.40 2.83 1.38  
SINCE JAN 1 88.35 96.06 -7.71 91.88  
 
SNOWFALL (IN)  
YESTERDAY 0.0  
MONTH TO DATE 0.0  
SINCE DEC 1 0.0  
SINCE JUL 1 0.0  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 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  
YESTERDAY 19 16 3 16  
MONTH TO DATE 371 360 11 376  
SINCE DEC 1 371 360 11 376  
SINCE JAN 1 6324 5861 463 6268    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 18 RESULTANT WIND DIRECTION E (80)  
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 18.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 74 11:00 PM  
LOWEST 57 2:00 PM  
AVERAGE 66  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 90 1988  
2014  
MINIMUM TEMPERATURE (F) 77 71 1963  
1986  
 
SUNRISE AND SUNSET  
DECEMBER 23 2020......SUNRISE 6:40 AM CHST SUNSET 6:00 PM CHST  
DECEMBER 24 2020......SUNRISE 6:40 AM CHST SUNSET 6:00 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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