287  
FPMY50 PGUM 120519  
ZFPGUM  
 
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS  
NATIONAL WEATHER SERVICE TIYAN GU  
319 PM CHST FRI SEP 12 2025  
 
GUZ001-MPZ001>003-122100-  
GUAM-ROTA-TINIAN-SAIPAN-  
319 PM CHST FRI SEP 12 2025  
   
TONIGHT
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. SOUTHEAST WINDS AROUND 10 MPH. LOWS AROUND 78. CHANCE  
OF SHOWERS 30 PERCENT.    
SATURDAY AND SATURDAY NIGHT
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS  
AND ISOLATED THUNDERSTORMS. SOUTHEAST WINDS 10 TO 15 MPH BECOMING  
EAST SATURDAY NIGHT. HIGHS AROUND 87. CHANCE OF SHOWERS 30 PERCENT.    
SUNDAY
 
MOSTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS.  
EAST WINDS 10 TO 15 MPH. LOWS AROUND 78. HIGHS AROUND 87. CHANCE OF  
SHOWERS 20 PERCENT.    
SUNDAY NIGHT
 
PARTLY CLOUDY WITH ISOLATED SHOWERS. EAST WINDS 10  
TO 15 MPH. LOWS AROUND 78. CHANCE OF SHOWERS 20 PERCENT.    
MONDAY
 
PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS.  
EAST WINDS 10 TO 15 MPH. HIGHS AROUND 87. CHANCE OF SHOWERS 20  
PERCENT.    
MONDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SHOWERS  
AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 70S.    
TUESDAY
 
PARTLY SUNNY WITH A 20 PERCENT CHANCE OF SHOWERS AND  
THUNDERSTORMS. HIGHS IN THE UPPER 80S.    
TUESDAY NIGHT THROUGH THURSDAY
 
MOSTLY CLOUDY WITH A 40 PERCENT  
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 70S. HIGHS IN THE UPPER 80S.    
THURSDAY NIGHT AND FRIDAY
 
PARTLY CLOUDY WITH A 20 PERCENT CHANCE  
OF SHOWERS. LOWS IN THE UPPER 70S. HIGHS IN THE UPPER 80S.  
 

 
 
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