117  
CDGM40 PGUM 111602  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
202 AM CHST THU AUG 12 2021  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 11 2021...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
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 90 2:31 PM 92 1986 87 3 90  
1990  
MINIMUM 77 4:16 AM 72 1951 76 1 79  
1953  
AVERAGE 84 82 2 85  
 
PRECIPITATION (IN)  
YESTERDAY 0.30 5.53 1953 0.60 -0.30 0.10  
MONTH TO DATE 7.04 6.09 0.95 1.80  
SINCE JUN 1 20.88 24.85 -3.97 13.46  
SINCE JAN 1 38.86 45.06 -6.20 32.20  
 
SNOWFALL (IN)  
YESTERDAY 0.0  
MONTH TO DATE 0.0  
SINCE JUN 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 JUN 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 19 16 3 20  
MONTH TO DATE 194 185 9 216  
SINCE JUN 1 1341 1263 78 1402  
SINCE JAN 1 3914 3738 176 4022    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION E (100)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 6.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 91 8:00 PM  
LOWEST 65 2:00 PM  
AVERAGE 78  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 91 1985  
1988  
MINIMUM TEMPERATURE (F) 76 71 1947  
 
SUNRISE AND SUNSET  
AUGUST 12 2021........SUNRISE 6:08 AM CHST SUNSET 6:44 PM CHST  
AUGUST 13 2021........SUNRISE 6:08 AM CHST SUNSET 6:43 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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