334  
CDGM40 PGUM 211617  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
217 AM CHST THU JUL 22 2021  
   
...............................
 
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JULY 21 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 85 3:17 PM 92 1969 88 -3 89  
1994  
MINIMUM 75 10:54 AM 71 1967 77 -2 78  
AVERAGE 80 82 -2 84  
 
PRECIPITATION (IN)  
YESTERDAY 0.61 4.88 2014 0.44 0.17 0.04  
MONTH TO DATE 5.35 7.57 -2.22 4.73  
SINCE JUN 1 10.43 14.08 -3.65 8.13  
SINCE JAN 1 28.41 34.29 -5.88 26.87  
 
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 15 17 -2 19  
MONTH TO DATE 399 367 32 410  
SINCE JUN 1 967 910 57 1001  
SINCE JAN 1 3540 3385 155 3621    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION SE (130)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 7.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 9:00 AM  
LOWEST 77 4:00 PM  
AVERAGE 87  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 92 1966  
1994  
MINIMUM TEMPERATURE (F) 77 71 1986  
 
SUNRISE AND SUNSET  
JULY 22 2021..........SUNRISE 6:03 AM CHST SUNSET 6:51 PM CHST  
JULY 23 2021..........SUNRISE 6:04 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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