883  
CDGM40 PGUM 201601  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
201 AM CHST WED JUL 21 2021  
   
...............................
 
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JULY 20 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 10:13 AM 93 1969 88 -3 91  
MINIMUM 77 4:08 AM 73 2002 77 0 78  
AVERAGE 81 82 -1 85  
 
PRECIPITATION (IN)  
YESTERDAY 1.12 4.48 1971 0.42 0.70 1.00  
MONTH TO DATE 4.74 7.13 -2.39 4.69  
SINCE JUN 1 9.82 13.64 -3.82 8.09  
SINCE JAN 1 27.80 33.85 -6.05 26.83  
 
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 16 17 -1 20  
MONTH TO DATE 384 350 34 391  
SINCE JUN 1 952 893 59 982  
SINCE JAN 1 3525 3368 157 3602    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION E (100)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 4.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 2:00 AM  
LOWEST 77 10:00 AM  
AVERAGE 87  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 92 1969  
1994  
MINIMUM TEMPERATURE (F) 77 71 1967  
 
SUNRISE AND SUNSET  
JULY 21 2021..........SUNRISE 6:03 AM CHST SUNSET 6:51 PM CHST  
JULY 22 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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