566  
CDGM40 PGUM 181620  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
220 AM CHST TUE JAN 19 2021  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JANUARY 18 2021...  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
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 86 3:54 PM 89 1964 85 1 86  
1972  
1985  
MINIMUM 78 7:19 AM 66 2000 75 3 73  
AVERAGE 82 80 2 80  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.94 1963 0.16 -0.16 0.07  
MONTH TO DATE 1.72 3.10 -1.38 1.06  
SINCE DEC 1 9.74 9.08 0.66 2.52  
SINCE JAN 1 1.72 3.10 -1.38 1.06  
 
SNOWFALL (IN)  
YESTERDAY 0.0  
MONTH TO DATE 0.0  
SINCE DEC 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 DEC 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 17 15 2 15  
MONTH TO DATE 299 273 26 284  
SINCE DEC 1 818 775 43 806  
SINCE JAN 1 299 273 26 284    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 13 RESULTANT WIND DIRECTION E (90)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 12.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 76 10:00 PM  
LOWEST 61 3:00 PM  
AVERAGE 69  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 90 2012  
2018  
MINIMUM TEMPERATURE (F) 75 69 2000  
 
SUNRISE AND SUNSET  
JANUARY 19 2021.......SUNRISE 6:48 AM CHST SUNSET 6:15 PM CHST  
JANUARY 20 2021.......SUNRISE 6:48 AM CHST SUNSET 6:15 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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