977  
CDGM40 PGUM 170640  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
440 PM CHST THU AUG 17 2023  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 17 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 86 9:41 AM 91 1964 87 -1 82  
1966  
1969  
MINIMUM 76 6:05 AM 73 1979 77 -1 74  
1990  
AVERAGE 81 82 -1 78  
 
PRECIPITATION (IN)  
TODAY 0.31 3.09 2003 0.60 -0.29 0.79  
MONTH TO DATE 10.72 9.72 1.00 3.18  
SINCE JUN 1 28.41 28.48 -0.07 21.77  
SINCE JAN 1 89.73 48.69 41.04 38.26  
 
SNOWFALL (IN)  
TODAY 0.0  
MONTH TO DATE 0.0  
SINCE JUN 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 JUN 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 16 17 -1 13  
MONTH TO DATE 281 289 -8 285  
SINCE JUN 1 1325 1383 -58 1314  
SINCE JAN 1 3746 3895 -149 3796    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION N (20)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 3.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 4:00 AM  
LOWEST 70 2:00 PM  
AVERAGE 82  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 92 1992  
MINIMUM TEMPERATURE (F) 77 71 1990  
 
SUNRISE AND SUNSET  
AUGUST 17 2023........SUNRISE 6:08 AM CHST SUNSET 6:42 PM CHST  
AUGUST 18 2023........SUNRISE 6:08 AM CHST SUNSET 6:41 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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