625  
CXGM50 PGUM 041505  
CLMGUM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE TIYAN GUAM  
105 AM CHST MON APR 05 2021  
   
...............................
 
 
...THE GUAM INTERNATIONAL AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MARCH 2021...  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1945 TO 2021  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE DATE(S)  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 93 03/29/1964  
LOW 66 03/14/1965  
HIGHEST 90 90 03/11  
03/18  
03/25  
LOWEST 73 73 03/08  
03/16  
AVG. MAXIMUM 86.7 85.8 0.9 88.2  
AVG. MINIMUM 76.3 75.6 0.7 76.0  
MEAN 81.5 82.1  
DAYS MAX >= 90 2 0.0 2.0 3  
DAYS MAX <= 32 0 0.0 0.0 0  
DAYS MIN <= 32 0 0.0 0.0 0  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 9.27 1974  
MINIMUM 0.40 1978  
TOTALS 2.70 2.77 -0.07 1.33  
DAILY AVG. 0.09 0.09 0.00 0.04  
DAYS >= .01 21 18.9 2.1 15  
DAYS >= .10 10 8.4 1.6 4  
DAYS >= .50 2 1.1 0.9 0  
DAYS >= 1.00 0 0.2 -0.2 0  
DAYS >= %-5.2F 0  
GREATEST  
24 HR. TOTAL 0.69 03/09 TO 03/09 0.33 03/02 TO 03/02  
 
SNOWFALL (INCHES)  
TOTALS 0.0  
SINCE 7/1 0.0  
GREATEST  
SNOW DEPTH 0  
 
DEGREE DAYS  
COOLING TOTAL 518 487 31 541  
SINCE 1/1 1482 1377 105 1479  
 
FREEZE DATES   
............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 11.2  
RESULTANT WIND SPEED/DIRECTION 11/080  
HIGHEST WIND SPEED/DIRECTION 25/090 DATE 03/06  
25/090 03/25  
HIGHEST GUST SPEED/DIRECTION 36/070 DATE 03/23  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.31  
NUMBER OF DAYS FAIR 23  
NUMBER OF DAYS PC 8  
NUMBER OF DAYS CLOUDY 0  
 
AVERAGE RH (PERCENT) 74  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 HEAVY RAIN 6  
RAIN 5 LIGHT RAIN 17  
FOG 0 HAZE 0  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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