004  
CDGM40 PGUM 120630  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
430 PM CHST THU AUG 12 2021  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR AUGUST 12 2021...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 84 11:05 AM 91 1985 87 -3 88  
1988  
MINIMUM 75 6:36 AM 71 1947 76 -1 77  
AVERAGE 80 82 -2 83  
 
PRECIPITATION (IN)  
TODAY 0.38 4.53 1974 0.60 -0.22 0.18  
MONTH TO DATE 7.42 6.69 0.73 1.98  
SINCE JUN 1 21.26 25.45 -4.19 13.64  
SINCE JAN 1 39.24 45.66 -6.42 32.38  
 
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 15 16 -1 18  
MONTH TO DATE 209 201 8 234  
SINCE JUN 1 1356 1279 77 1420  
SINCE JAN 1 3929 3754 175 4040    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION NE (60)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 3.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
HEAVY RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 10:00 AM  
LOWEST 82 4:00 AM  
AVERAGE 86  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 92 1970  
2018  
MINIMUM TEMPERATURE (F) 76 70 1967  
 
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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