424  
CDGM40 PGUM 111609  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
209 AM CHST SUN SEP 12 2021  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 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 89 2:29 PM 93 2016 87 2 90  
MINIMUM 78 5:19 AM 72 1950 76 2 79  
1955  
AVERAGE 84 82 2 85  
 
PRECIPITATION (IN)  
YESTERDAY 0.50 2.03 1961 0.51 -0.01 0.23  
MONTH TO DATE 2.56 5.85 -3.29 1.73  
SINCE SEP 1 2.56 5.85 -3.29 1.73  
SINCE JAN 1 49.82 62.48 -12.66 44.81  
 
SNOWFALL (IN)  
YESTERDAY 0.0  
MONTH TO DATE 0.0  
SINCE SEP 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 SEP 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 19 16 3 20  
MONTH TO DATE 198 176 22 206  
SINCE SEP 1 198 176 22 206  
SINCE JAN 1 4447 4242 205 4577    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION E (70)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 8.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 5:00 AM  
LOWEST 68 1:00 PM  
AVERAGE 81  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 92 1969  
MINIMUM TEMPERATURE (F) 76 70 1995  
 
SUNRISE AND SUNSET  
SEPTEMBER 12 2021.....SUNRISE 6:10 AM CHST SUNSET 6:24 PM CHST  
SEPTEMBER 13 2021.....SUNRISE 6:10 AM CHST SUNSET 6:24 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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