922  
CDGM40 PGUM 130640  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
440 PM CHST MON SEP 13 2021  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 13 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 90 2:24 PM 92 1983 87 3 89  
1988  
MINIMUM 80 6:05 AM 70 1992 76 4 79  
AVERAGE 85 82 3 84  
 
PRECIPITATION (IN)  
TODAY T 3.67 1945 0.49 -0.49 0.08  
MONTH TO DATE 2.62 6.84 -4.22 1.97  
SINCE SEP 1 2.62 6.84 -4.22 1.97  
SINCE JAN 1 49.88 63.47 -13.59 45.05  
 
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 20 16 4 19  
MONTH TO DATE 237 208 29 244  
SINCE SEP 1 237 208 29 244  
SINCE JAN 1 4486 4274 212 4615    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION NE (50)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 7.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 4:00 AM  
LOWEST 68 1:00 PM  
AVERAGE 81  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 92 1983  
MINIMUM TEMPERATURE (F) 76 72 1945  
1948  
 
SUNRISE AND SUNSET  
SEPTEMBER 13 2021.....SUNRISE 6:10 AM CHST SUNSET 6:24 PM CHST  
SEPTEMBER 14 2021.....SUNRISE 6:10 AM CHST SUNSET 6:23 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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