394  
CDGM40 PGUM 310636  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
436 PM CHST SAT JUL 31 2021  
   
...............................
 
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR JULY 31 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 91R 10:26 AM 91 1994 87 4 91  
2013  
2020  
MINIMUM 77 6:56 AM 73 1956 76 1 80  
1967  
1969  
AVERAGE 84 82 2 86  
 
PRECIPITATION (IN)  
TODAY 0.66 2.90 1962 0.47 0.19 0.04  
MONTH TO DATE 8.74 12.25 -3.51 8.26  
SINCE JUN 1 13.82 18.76 -4.94 11.66  
SINCE JAN 1 31.80 38.97 -7.17 30.40  
 
SNOWFALL (IN)  
TODAY 0.0  
MONTH TO DATE 0.0  
SINCE JUN 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 JUN 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 19 17 2 21  
MONTH TO DATE 579 535 44 595  
SINCE JUN 1 1147 1078 69 1186  
SINCE JAN 1 3720 3553 167 3806    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION NW (310)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 5.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST MM  
LOWEST MM  
AVERAGE MM  
   
......................................................
 
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 92 1983  
MINIMUM TEMPERATURE (F) 76 71 1969  
 
SUNRISE AND SUNSET  
JULY 31 2021..........SUNRISE 6:05 AM CHST SUNSET 6:49 PM CHST  
AUGUST 1 2021........SUNRISE 6:06 AM CHST SUNSET 6:49 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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