Zone Forecast Product
Issued by NWS Tiyan, Guam

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FPMY50 PGUM 251801
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service TIYAN GU
Issued by National Weather Service Honolulu HI
401 AM ChST Thu Jun 26 2025

GUZ001-MPZ001-260800-
Guam-Rota-
401 AM ChST Thu Jun 26 2025

...FLOOD WATCH IN EFFECT THROUGH LATE SUNDAY NIGHT...

.TODAY...Cloudy with numerous showers and isolated thunderstorms.
South winds 10 to 15 mph with occasional gusts to 25 mph. Highs
around 86. Chance of showers 70 percent.
.TONIGHT...Cloudy with numerous showers and isolated thunderstorms.
Southeast winds 10 to 15 mph. Lows around 79. Chance of showers 70
percent.
.FRIDAY...Cloudy with numerous showers and isolated thunderstorms.
Southeast winds 10 to 15 mph. Highs around 85. Chance of showers
70 percent.
.FRIDAY NIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. Light and variable winds. Lows around 79. Chance of
showers 50 percent.
.SATURDAY...Mostly cloudy with scattered showers and isolated
thunderstorms. Southwest winds 10 mph. Highs around 85. Chance of
showers 50 percent.
.SATURDAY NIGHT...Mostly cloudy with numerous showers and isolated
thunderstorms. Lows in the upper 70s. Chance of showers 60 percent.
.SUNDAY...Mostly cloudy with scattered showers and isolated
thunderstorms. Highs in the mid 80s. Chance of showers 50 percent.
.SUNDAY NIGHT...Cloudy with showers likely and a slight chance of
thunderstorms. Lows in the upper 70s. Chance of showers 70 percent.
.MONDAY...Partly sunny with a 30 percent chance of showers and a
slight chance of thunderstorms. Highs in the mid 80s.
.MONDAY NIGHT...Mostly cloudy with a 20 percent chance of showers
and thunderstorms. Lows in the upper 70s.
.TUESDAY...Partly cloudy with a 20 percent chance of showers and
thunderstorms. Highs in the mid 80s.
.TUESDAY NIGHT...Mostly cloudy with a 30 percent chance of showers
and a slight chance of thunderstorms. Lows in the upper 70s.
.WEDNESDAY...Partly cloudy with a 20 percent chance of showers and
thunderstorms. Highs in the mid 80s.

$$

MPZ002-003-260800-
Tinian-Saipan-
401 AM ChST Thu Jun 26 2025

...FLOOD WATCH IN EFFECT THROUGH LATE SUNDAY NIGHT...

.TODAY...Partly sunny with scattered showers and isolated
thunderstorms. Southeast winds 10 to 20 mph. Highs around 87. Chance
of showers 50 percent.
.TONIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. Southeast winds 10 to 20 mph. Lows around 80. Chance
of showers 40 percent.
.FRIDAY...Partly sunny with scattered showers and isolated
thunderstorms. South winds 10 to 15 mph. Highs around 86. Chance of
showers 50 percent.
.FRIDAY NIGHT AND SATURDAY...Mostly cloudy. Scattered showers and
isolated thunderstorms. Southeast winds around 10 mph. Lows around
80. Highs around 86. Chance of showers 40 percent.
.SATURDAY NIGHT AND SUNDAY...Mostly cloudy with scattered showers
and isolated thunderstorms. Lows around 80. Highs in the mid 80s.
Chance of showers 50 percent.
.SUNDAY NIGHT AND MONDAY...Mostly cloudy with a 50 percent chance of
showers and a slight chance of thunderstorms. Lows around 80. Highs
in the mid 80s.
.MONDAY NIGHT...Mostly cloudy with a 20 percent chance of showers
and thunderstorms. Lows around 80.
.TUESDAY...Partly cloudy with a 20 percent chance of showers and
thunderstorms. Highs in the mid 80s.
.TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. A 20 percent chance of
showers and thunderstorms. Lows around 80. Highs in the mid 80s.

$$