328  
FPMY50 PGUM 030556  
ZFPGUM  
 
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS  
NATIONAL WEATHER SERVICE TIYAN GU  
356 PM CHST MON AUG 3 2026  
 
GUZ001-032100-  
GUAM-  
356 PM CHST MON AUG 3 2026  
   
..WIND ADVISORY IN EFFECT UNTIL 6 AM CHST WEDNESDAY  
 
...HIGH SURF ADVISORY IN EFFECT UNTIL 4 PM CHST SATURDAY ALONG NORTH  
AND EAST FACING REEFS...  
...HIGH RIP CURRENT RISK IN EFFECT THROUGH SATURDAY AFTERNOON ALONG  
NORTH AND EAST FACING REEFS...  
   
TONIGHT  
WINDY. MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE. WEST WINDS 20 TO 30  
MPH WITH GUSTS TO 40 MPH NEAR HEAVIER SHOWERS. LOWS AROUND 76.  
CHANCE OF SHOWERS 50 PERCENT.    
TUESDAY AND TUESDAY NIGHT  
WINDY. MOSTLY CLOUDY WITH SCATTERED  
SHOWERS AND ISOLATED THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE.  
WEST TO SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 40 MPH NEAR  
HEAVIER SHOWERS. HIGHS AROUND 86. LOWS AROUND 76. CHANCE OF SHOWERS  
50 PERCENT.   
WEDNESDAY  
BREEZY. MOSTLY CLOUDY WITH SCATTERED SHOWERS AND  
ISOLATED THUNDERSTORMS. WEST WINDS 15 TO 25 MPH WITH GUSTS TO 35 MPH  
POSSIBLE. HIGHS AROUND 86. LOWS AROUND 76. CHANCE OF SHOWERS 50  
PERCENT.   
WEDNESDAY NIGHT  
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. WEST WINDS 15 TO 20 MPH WITH OCCASIONAL GUSTS TO 30  
MPH. LOWS AROUND 77. CHANCE OF SHOWERS 40 PERCENT.   
THURSDAY AND THURSDAY NIGHT  
MOSTLY CLOUDY WITH SCATTERED SHOWERS  
AND ISOLATED THUNDERSTORMS. WEST WINDS 15 TO 20 MPH. HIGHS AROUND  
87. LOWS AROUND 77. CHANCE OF SHOWERS 30 PERCENT.   
FRIDAY  
PARTLY SUNNY WITH A 30 PERCENT CHANCE OF SHOWERS. HIGHS IN  
THE UPPER 80S.   
FRIDAY NIGHT THROUGH MONDAY  
BREEZY. MOSTLY CLOUDY WITH A CHANCE  
OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER  
70S. HIGHS IN THE UPPER 80S. CHANCE OF SHOWERS 30 PERCENT.  
 
 
 
MPZ001>003-032100-  
ROTA-TINIAN-SAIPAN-  
356 PM CHST MON AUG 3 2026  
 
...HIGH SURF ADVISORY IN EFFECT UNTIL 4 PM CHST SATURDAY ALONG NORTH  
AND EAST FACING REEFS...  
...HIGH RIP CURRENT RISK IN EFFECT THROUGH SATURDAY AFTERNOON ALONG  
NORTH AND EAST FACING REEFS...  
   
TONIGHT  
BREEZY. MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE. WEST WINDS 20 TO 25  
MPH WITH GUSTS TO 35 MPH POSSIBLE. LOWS AROUND 76. CHANCE OF SHOWERS  
50 PERCENT.    
TUESDAY  
BREEZY. MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE. WEST WINDS 20 TO 25  
MPH WITH GUSTS TO 35 MPH POSSIBLE. HIGHS AROUND 86. CHANCE OF SHOWERS  
50 PERCENT.    
TUESDAY NIGHT  
BREEZY. MOSTLY CLOUDY WITH SCATTERED SHOWERS AND  
ISOLATED THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE. WEST WINDS  
20 TO 25 MPH WITH GUSTS TO 35 MPH POSSIBLE. LOWS AROUND 76. CHANCE  
OF SHOWERS 50 PERCENT.   
WEDNESDAY  
BREEZY. CLOUDY WITH NUMEROUS LOCALLY HEAVY SHOWERS AND  
ISOLATED THUNDERSTORMS. WEST WINDS 15 TO 25 MPH WITH GUSTS TO 35 MPH  
NEAR HEAVIER SHOWERS. HIGHS AROUND 86. CHANCE OF SHOWERS 70 PERCENT.   
WEDNESDAY NIGHT AND THURSDAY  
MOSTLY CLOUDY. SCATTERED SHOWERS AND  
ISOLATED THUNDERSTORMS. WEST WINDS 15 TO 20 MPH WITH OCCASIONAL GUSTS  
TO 30 MPH. LOWS AROUND 77. HIGHS AROUND 86. CHANCE OF SHOWERS 50  
PERCENT.   
THURSDAY NIGHT THROUGH SATURDAY NIGHT  
BREEZY. 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.    
SUNDAY THROUGH MONDAY  
BREEZY. MOSTLY CLOUDY WITH A 50 PERCENT  
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. HIGHS IN THE  
MID TO UPPER 80S. LOWS IN THE UPPER 70S.  
 
 
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