524
FPMY50 PGUM 220848
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
648 PM ChST Sat Aug 22 2026

GUZ001-MPZ001>003-222030-
Guam-Rota-Tinian-Saipan-
648 PM ChST Sat Aug 22 2026

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

.TONIGHT...Mostly cloudy with scattered locally heavy showers and
isolated thunderstorms. Southwest winds 10 to 15 mph. Lows around
78. Chance of showers 40 percent.
.SUNDAY...Partly sunny with scattered heavy showers and isolated
thunderstorms. Southwest winds 15 to 20 mph. Highs around 87. Chance
of showers 40 percent.
.SUNDAY NIGHT...Mostly cloudy with scattered heavy showers and
isolated thunderstorms. Southwest winds 10 to 15 mph. Lows around
77. Chance of showers 50 percent.
.MONDAY THROUGH TUESDAY NIGHT...Mostly cloudy with numerous heavy
showers and isolated thunderstorms. Southwest winds 10 to 20 mph.
Highs around 86. Lows around 77. Chance of showers 60 percent.
.WEDNESDAY...Cloudy with showers likely and a slight chance of
thunderstorms. Highs in the lower 80s. Chance of showers 70 percent.
.WEDNESDAY NIGHT...Mostly cloudy with a 50 percent chance of showers
and a slight chance of thunderstorms. Lows in the upper 70s.
.THURSDAY...Breezy. Mostly cloudy with showers likely and a slight
chance of thunderstorms. Highs in the mid 80s. Chance of showers
60 percent.
.THURSDAY NIGHT...Breezy. Cloudy with showers likely and a slight
chance of thunderstorms. Lows in the upper 70s. Chance of showers
70 percent.
.FRIDAY THROUGH SATURDAY...Breezy. 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.

$$