432  
FPMY50 PGUM 160158 AAA  
ZFPGUM  
 
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS...UPDATED  
NATIONAL WEATHER SERVICE TIYAN GU  
1158 AM CHST TUE SEP 16 2025  
 
GUZ001-160800-  
GUAM-  
1158 AM CHST TUE SEP 16 2025  
 
UPDATED FOR INCREASING RAIN AND THUNDERSTORMS THIS AFTERNOON.  
   
REST OF TODAY
 
MOSTLY CLOUDY WITH NUMEROUS SHOWERS AND ISOLATED  
THUNDERSTORMS. SOUTHEAST WINDS 10 TO 15 MPH. HIGHS AROUND 85. CHANCE  
OF SHOWERS 70 PERCENT.   
TONIGHT
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. SOUTHEAST WINDS 10 TO 15 MPH. LOWS AROUND 79. CHANCE  
OF SHOWERS 50 PERCENT.   
WEDNESDAY
 
PARTLY SUNNY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. SOUTHEAST WINDS 10 TO 15 MPH. HIGHS NEAR 87. CHANCE  
OF SHOWERS 40 PERCENT.   
WEDNESDAY NIGHT
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. SOUTHEAST WINDS AROUND 10 MPH IN THE EVENING BECOMING  
LIGHT. LOWS IN THE UPPER 70S. CHANCE OF SHOWERS 40 PERCENT.   
THURSDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. EAST  
WINDS 10 TO 15 MPH. HIGHS NEAR 86. CHANCE OF SHOWERS 20 PERCENT.   
THURSDAY NIGHT THROUGH SUNDAY
 
PARTLY CLOUDY WITH A 20 PERCENT  
CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 70S. HIGHS IN  
THE MID 80S.   
SUNDAY NIGHT AND MONDAY
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF  
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 70S. HIGHS IN THE MID  
80S.  
 

 
 
MPZ001>003-160800-  
ROTA-TINIAN-SAIPAN-  
1158 AM CHST TUE SEP 16 2025  
   
TODAY
 
PARTLY SUNNY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. SOUTHEAST WINDS 10 TO 15 MPH. HIGHS NEAR 87. CHANCE  
OF SHOWERS 40 PERCENT.   
TONIGHT
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. SOUTHEAST WINDS 10 TO 15 MPH. LOWS AROUND 79. CHANCE  
OF SHOWERS 50 PERCENT.   
WEDNESDAY
 
PARTLY SUNNY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. SOUTHEAST WINDS 10 TO 15 MPH. HIGHS NEAR 87. CHANCE  
OF SHOWERS 40 PERCENT.   
WEDNESDAY NIGHT
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. SOUTHEAST WINDS AROUND 10 MPH IN THE EVENING BECOMING  
LIGHT. LOWS IN THE UPPER 70S. CHANCE OF SHOWERS 40 PERCENT.   
THURSDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. EAST  
WINDS 10 TO 15 MPH. HIGHS NEAR 86. CHANCE OF SHOWERS 20 PERCENT.   
THURSDAY NIGHT THROUGH SUNDAY
 
PARTLY CLOUDY WITH A 20 PERCENT  
CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 70S. HIGHS IN  
THE MID 80S.   
SUNDAY NIGHT AND MONDAY
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF  
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 70S. HIGHS IN THE MID  
80S.  
 

 
 
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