584  
FPMY50 PGUM 141800  
ZFPGUM  
 
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS  
NATIONAL WEATHER SERVICE TIYAN GU  
400 AM CHST FRI AUG 15 2025  
 
GUZ001-150900-  
GUAM-  
400 AM CHST FRI AUG 15 2025  
   
TODAY
 
PARTLY CLOUDY WITH ISOLATED SHOWERS IN THE MORNING, THEN  
PARTLY SUNNY WITH SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS IN  
THE AFTERNOON. LIGHT AND VARIABLE WINDS. HIGHS AROUND 88. CHANCE OF  
SHOWERS 40 PERCENT.    
TONIGHT
 
PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS.  
LIGHT AND VARIABLE WINDS. LOWS AROUND 77. CHANCE OF SHOWERS  
20 PERCENT.    
SATURDAY
 
PARTLY CLOUDY WITH ISOLATED SHOWERS IN THE MORNING, THEN  
PARTLY SUNNY WITH SCATTERED SHOWERS IN THE AFTERNOON. LIGHT AND  
VARIABLE WINDS. HIGHS AROUND 88. CHANCE OF SHOWERS 30 PERCENT.    
SATURDAY NIGHT AND SUNDAY
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF  
SHOWERS AND THUNDERSTORMS. EAST WINDS 10 TO 15 MPH. LOWS AROUND 78.  
HIGHS AROUND 88.    
SUNDAY NIGHT AND MONDAY
 
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF  
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 70S. HIGHS IN THE UPPER  
80S.    
MONDAY NIGHT AND TUESDAY
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF  
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 70S. HIGHS IN THE UPPER  
80S.    
TUESDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SHOWERS  
AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 70S.    
WEDNESDAY
 
PARTLY SUNNY WITH A 20 PERCENT CHANCE OF SHOWERS AND  
THUNDERSTORMS. HIGHS IN THE UPPER 80S.    
WEDNESDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SHOWERS  
AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 70S.    
THURSDAY
 
PARTLY SUNNY WITH A 20 PERCENT CHANCE OF SHOWERS AND  
THUNDERSTORMS. HIGHS IN THE UPPER 80S.  
 

 
 
MPZ001>003-150900-  
ROTA-TINIAN-SAIPAN-  
400 AM CHST FRI AUG 15 2025  
   
TODAY
 
PARTLY CLOUDY WITH ISOLATED SHOWERS. EAST WINDS 5 TO 15 MPH.  
HIGHS AROUND 87. CHANCE OF SHOWERS 20 PERCENT.    
TONIGHT
 
PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS.  
LIGHT AND VARIABLE WINDS. LOWS AROUND 78. CHANCE OF SHOWERS 20  
PERCENT.    
SATURDAY
 
PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS.  
EAST WINDS 10 TO 15 MPH. HIGHS AROUND 87. CHANCE OF SHOWERS  
20 PERCENT.    
SATURDAY NIGHT AND SUNDAY
 
PARTLY CLOUDY WITH A 20 PERCENT CHANCE  
OF SHOWERS AND THUNDERSTORMS. EAST WINDS 10 TO 15 MPH. LOWS AROUND  
78. HIGHS AROUND 87.    
SUNDAY NIGHT THROUGH TUESDAY
 
PARTLY CLOUDY WITH A 20 PERCENT  
CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 70S. HIGHS IN  
THE UPPER 80S.    
TUESDAY NIGHT
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF SHOWERS  
AND THUNDERSTORMS. LOWS IN THE UPPER 70S.    
WEDNESDAY
 
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SHOWERS AND  
THUNDERSTORMS. HIGHS IN THE UPPER 80S.    
WEDNESDAY NIGHT AND THURSDAY
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE  
OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 70S. HIGHS IN THE  
UPPER 80S.  
 

 
 
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