390  
CDGM40 PGUM 211626  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
226 AM CHST THU MAY 22 2025  
   
...............................  
 
   
..THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR MAY 21 2025  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1945 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 89 1:41 PM 92 1971 89 0 87  
2013  
MINIMUM 79 11:53 PM 74 1987 78 1 79  
1991  
1992  
AVERAGE 84 83 1 83  
 
PRECIPITATION (IN)  
YESTERDAY T 18.49 1976 0.16 -0.16 0.11  
MONTH TO DATE 1.12 2.83 -1.71 1.38  
SINCE MAR 1 6.61 9.10 -2.49 10.17  
SINCE JAN 1 14.87 18.59 -3.72 14.43  
 
SNOWFALL (IN)  
YESTERDAY 0.0  
MONTH TO DATE 0.0  
SINCE MAR 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 MAR 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 19 18 1 18  
MONTH TO DATE 389 378 11 378  
SINCE MAR 1 1417 1407 10 1396  
SINCE JAN 1 2377 2326 51 2305    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION E (70)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 11.8  
 
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 12:00 AM  
LOWEST 61 10:00 AM  
AVERAGE 73  
   
......................................................  
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 93 2013  
MINIMUM TEMPERATURE (F) 78 73 1972  
 
SUNRISE AND SUNSET  
MAY 22 2025...........SUNRISE 5:53 AM CHST SUNSET 6:42 PM CHST  
MAY 23 2025...........SUNRISE 5:53 AM CHST SUNSET 6:42 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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