530  
FPMY50 PGUM 160601  
ZFPGUM  
 
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS  
NATIONAL WEATHER SERVICE TIYAN GU  
401 PM CHST WED SEP 16 2026  
 
GUZ001-MPZ001-162030-  
GUAM-ROTA-  
401 PM CHST WED SEP 16 2026  
   
TONIGHT
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE. NORTHWEST WINDS 10 TO  
15 MPH WITH GUSTS TO 25 MPH NEAR HEAVIER SHOWERS. LOWS AROUND 77.  
CHANCE OF SHOWERS 50 PERCENT.   
THURSDAY
 
PARTLY SUNNY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. WEST WINDS 10 TO 15 MPH. HIGHS AROUND 87. CHANCE OF  
SHOWERS 40 PERCENT.   
THURSDAY NIGHT
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. WEST WINDS 10 TO 15 MPH. LOWS AROUND 78. CHANCE OF  
SHOWERS 40 PERCENT.    
FRIDAY THROUGH SATURDAY
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND  
ISOLATED THUNDERSTORMS. SOUTHWEST WINDS 10 TO 15 MPH. HIGHS AROUND  
87. LOWS AROUND 77. CHANCE OF SHOWERS 40 PERCENT.    
SATURDAY NIGHT THROUGH WEDNESDAY
 
MOSTLY CLOUDY WITH A 50 PERCENT  
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 70S. HIGHS IN THE MID 80S.  
 

 
 
MPZ002-003-162030-  
TINIAN-SAIPAN-  
401 PM CHST WED SEP 16 2026  
   
TONIGHT
 
MOSTLY CLOUDY WITH NUMEROUS SHOWERS IN THE EVENING, THEN  
SCATTERED SHOWERS AFTER MIDNIGHT. ISOLATED THUNDERSTORMS. LOCALLY  
HEAVY SHOWERS POSSIBLE. NORTH WINDS 10 TO 15 MPH WITH GUSTS TO 25  
MPH NEAR HEAVIER SHOWERS. LOWS AROUND 76. CHANCE OF SHOWERS 60  
PERCENT.   
THURSDAY
 
PARTLY SUNNY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. NORTHWEST WINDS 10 TO 15 MPH. HIGHS AROUND 87. CHANCE  
OF SHOWERS 30 PERCENT.   
THURSDAY NIGHT
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. WEST WINDS 10 TO 15 MPH. LOWS AROUND 78. CHANCE OF  
SHOWERS 30 PERCENT.   
FRIDAY THROUGH SATURDAY
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND  
ISOLATED THUNDERSTORMS. SOUTHWEST WINDS 15 TO 20 MPH. HIGHS AROUND  
87. LOWS AROUND 78. CHANCE OF SHOWERS 30 PERCENT.  
.SATURDAY NIGHT THROUGH SUNDAY NIGHT..MOSTLY CLOUDY. A 40 PERCENT  
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 70S. HIGHS IN THE UPPER 80S.    
MONDAY THROUGH WEDNESDAY
 
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS  
AND A SLIGHT CHANCE OF THUNDERSTORMS. HIGHS IN THE MID 80S. LOWS IN  
THE UPPER 70S. CHANCE OF SHOWERS 50 PERCENT.  
 

 
 
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