FPMY50 PGUM 221806
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
406 AM ChST Sun Aug 23 2026

GUZ001-MPZ001>003-230830-
Guam-Rota-Tinian-Saipan-
406 AM ChST Sun Aug 23 2026

...HIGH SURF ADVISORY IN EFFECT UNTIL 4 PM CHST THIS AFTERNOON ALONG
NORTH AND WEST FACING REEFS...
...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS AFTERNOON ALONG NORTH
AND WEST FACING REEFS...

.TODAY...Partly sunny. Scattered showers and isolated thunderstorms.
Southwest winds 15 to 20 mph. Highs around 87. Chance of showers 30 
percent.
.TONIGHT...Mostly cloudy with numerous showers and isolated
thunderstorms. Southwest winds 10 to 15 mph. Lows around 77. Chance 
of showers 70 percent.
.MONDAY...Partly sunny. Scattered showers. Isolated thunderstorms. 
Southwest winds 10 to 15 mph. Highs near 86. Chance of showers 30 
percent.
.MONDAY NIGHT AND TUESDAY...Mostly cloudy. Scattered showers and
isolated thunderstorms. Southwest winds 10 to 15 mph. Lows around
79. Highs near 85. Chance of showers 40 percent.
.TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. Scattered showers and 
isolated thunderstorms. Lows in the upper 70s. Highs in the mid 80s.
Chance of showers 40 percent.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy with a 40 percent
chance of showers and a slight chance of thunderstorms. Lows in the
upper 70s. Highs in the mid 80s.
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the upper 70s. Chance of showers
60 percent.
.FRIDAY...Breezy. Cloudy with showers likely and a slight chance of
thunderstorms. Highs in the mid 80s. Chance of showers 70 percent.
.FRIDAY NIGHT AND SATURDAY...Breezy. Mostly cloudy. A chance of
showers and a slight chance of thunderstorms. Lows in the upper 70s.
Highs in the mid 80s. Chance of showers 40 percent.

$$