277  
CDGM40 PGUM 201605  
CLIGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
205 AM CHST FRI MAR 21 2025  
   
...............................  
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR MARCH 20 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 86 12:51 PM 90 1988 87 -1 84  
1989  
2018  
MINIMUM 76 5:48 AM 71 1973 76 0 71  
1974  
2012  
AVERAGE 81 81 0 78  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 0.47 1976 0.09 -0.08 0.00  
MONTH TO DATE 2.78 1.85 0.93 1.06  
SINCE MAR 1 2.78 1.85 0.93 1.06  
SINCE JAN 1 11.04 11.34 -0.30 5.32  
 
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 16 16 0 13  
MONTH TO DATE 328 320 8 309  
SINCE MAR 1 328 320 8 309  
SINCE JAN 1 1288 1239 49 1218    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION E (80)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 9.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 9:00 PM  
LOWEST 61 1:00 PM  
AVERAGE 76  
   
......................................................  
 
THE GUAM INTERNATIONAL AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 90 1994  
2013  
2018  
MINIMUM TEMPERATURE (F) 76 70 2024  
 
SUNRISE AND SUNSET  
MARCH 21 2025.........SUNRISE 6:24 AM CHST SUNSET 6:32 PM CHST  
MARCH 22 2025.........SUNRISE 6:24 AM CHST SUNSET 6:32 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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