839  
CDGM40 PGUM 171615  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
215 AM CHST MON JAN 18 2021  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JANUARY 17 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 1:12 PM 90 1964 85 1 87  
MINIMUM 78 6:45 AM 68 2000 75 3 73  
AVERAGE 82 80 2 80  
 
PRECIPITATION (IN)  
YESTERDAY T 0.91 1997 0.16 -0.16 0.03  
MONTH TO DATE 1.72 2.94 -1.22 0.99  
SINCE DEC 1 9.74 8.92 0.82 2.45  
SINCE JAN 1 1.72 2.94 -1.22 0.99  
 
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 282 258 24 269  
SINCE DEC 1 801 760 41 791  
SINCE JAN 1 282 258 24 269    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION E (90)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 12.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 9:00 PM  
LOWEST 68 11:00 AM  
AVERAGE 75  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 89 1964  
1972  
1985  
MINIMUM TEMPERATURE (F) 75 66 2000  
 
SUNRISE AND SUNSET  
JANUARY 18 2021.......SUNRISE 6:48 AM CHST SUNSET 6:14 PM CHST  
JANUARY 19 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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