821  
CDGM40 PGUM 200625  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
425 PM CHST WED SEP 20 2023  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 20 2023...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1945 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 87 12:14 PM 91 1988 87 0 88  
1989  
1995  
MINIMUM 79 5:59 AM 73 1964 76 3 74  
AVERAGE 83 82 1 81  
 
PRECIPITATION (IN)  
TODAY 0.08 8.21 2013 0.49 -0.41 0.23  
MONTH TO DATE 6.97 10.31 -3.34 10.50  
SINCE SEP 1 6.97 10.31 -3.34 10.50  
SINCE JAN 1 105.45 66.94 38.51 54.73  
 
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 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  
TODAY 18 17 1 16  
MONTH TO DATE 350 340 10 327  
SINCE SEP 1 350 340 10 327  
SINCE JAN 1 4336 4468 -132 4339    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION E (80)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 10.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 1:00 AM  
LOWEST 63 3:00 PM  
AVERAGE 77  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 92 1985  
MINIMUM TEMPERATURE (F) 76 72 1966  
1984  
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2023.....SUNRISE 6:10 AM CHST SUNSET 6:19 PM CHST  
SEPTEMBER 21 2023.....SUNRISE 6:10 AM CHST SUNSET 6:18 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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