667  
CDGM40 PGUM 191602  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
202 AM CHST TUE JUL 20 2021  
   
...............................
 
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JULY 19 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 1:45 PM 93 1994 88 1 88  
MINIMUM 80 5:29 AM 71 1950 77 3 80  
1989  
AVERAGE 85 82 3 84  
 
PRECIPITATION (IN)  
YESTERDAY 0.06 2.77 1950 0.42 -0.36 0.21  
MONTH TO DATE 3.62 6.71 -3.09 3.69  
SINCE JUN 1 8.70 13.22 -4.52 7.09  
SINCE JAN 1 26.68 33.43 -6.75 25.83  
 
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 20 17 3 19  
MONTH TO DATE 368 333 35 371  
SINCE JUN 1 936 876 60 962  
SINCE JAN 1 3509 3351 158 3582    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION E (110)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 6.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 7:00 AM  
LOWEST 68 10:00 AM  
AVERAGE 77  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 93 1969  
MINIMUM TEMPERATURE (F) 77 73 2002  
 
SUNRISE AND SUNSET  
JULY 20 2021..........SUNRISE 6:03 AM CHST SUNSET 6:52 PM CHST  
JULY 21 2021..........SUNRISE 6:03 AM CHST SUNSET 6:51 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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