559  
CDGM40 PGUM 191845  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN, GUAM  
445 AM CHST TUE OCT 20 2020  
 
   
...............................
 
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR OCTOBER 19 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 87 120 PM 91 1992 87 0 87  
1991  
1988  
MINIMUM 76 700 AM 70 1994 77 -1 74  
AVERAGE 82 82 0 81  
 
PRECIPITATION (IN)  
YESTERDAY 0.29 4.73 1977 0.37 -0.08 0.13  
MONTH TO DATE 12.05 7.57 4.48 8.74  
SINCE SEP 1 23.01 21.74 1.27 29.77  
SINCE JAN 1 66.09 78.26 -12.17 72.88  
 
SNOWFALL (IN)  
YESTERDAY 0.0  
MONTH TO DATE 0.0  
SINCE SEP 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 SEP 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 17 17 0 16  
MONTH TO DATE 333 323 10 314  
SINCE SEP 1 871 816 55 817  
SINCE JAN 1 5242 4803 439 5146    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION N (20)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 8.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 700 AM  
LOWEST 70 1200 PM  
AVERAGE 82  
   
......................................................
 
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 91 2014  
1988  
1970  
MINIMUM TEMPERATURE (F) 77 73 2002  
1965  
 
 
SUNRISE AND SUNSET  
OCTOBER 20 2020.......SUNRISE 612 AM CHST SUNSET 559 PM CHST  
OCTOBER 21 2020.......SUNRISE 612 AM CHST SUNSET 558 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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