642  
CDGM40 PGUM 200645  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN, GUAM  
445 PM CHST TUE OCT 20 2020  
 
   
...............................
 
 
 
...THE GUAM INTERNATIONAL AIRPORT GU CLIMATE SUMMARY FOR OCTOBER 20 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 87 127 PM 91 2014 87 0 88  
1988  
1970  
MINIMUM 75 608 AM 73 2002 77 -2 78  
1965  
AVERAGE 81 82 -1 83  
 
PRECIPITATION (IN)  
TODAY 0.23 3.05 1967 0.37 -0.14 0.03  
MONTH TO DATE 12.28 7.94 4.34 8.77  
SINCE SEP 1 23.24 22.11 1.13 29.80  
SINCE JAN 1 66.32 78.63 -12.31 72.91  
 
SNOWFALL (IN)  
TODAY 0.0  
MONTH TO DATE 0.0  
SINCE SEP 1 0.0  
SINCE JUL 1 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0  
MONTH TO DATE 0  
SINCE SEP 1 0  
SINCE JUL 1 0  
 
COOLING  
TODAY 16 17 -1 18  
MONTH TO DATE 349 340 9 332  
SINCE SEP 1 887 833 54 835  
SINCE JAN 1 5258 4820 438 5164    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION E (90)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SE (120)  
AVERAGE WIND SPEED 10.1  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 91 200 AM  
LOWEST 70 100 PM  
AVERAGE 81  
   
......................................................
 
 
 
THE GUAM INTERNATIONAL AIRPORT GU CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 92 1984  
MINIMUM TEMPERATURE (F) 77 70 1945  
 
 
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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