128
FPMY50 PGUM 150546
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
346 PM ChST Tue Sep 15 2026

GUZ001-MPZ001-152215-
Guam-Rota-
346 PM ChST Tue Sep 15 2026

.TONIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. Locally heavy showers possible. Northwest winds
around 10 mph in the evening becoming light. Lows around 76. Chance
of showers 50 percent.
.WEDNESDAY...Mostly cloudy with scattered showers and isolated
thunderstorms. West winds 10 to 15 mph. Highs around 86. Chance of
showers 50 percent.
.WEDNESDAY NIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. West winds 10 to 15 mph. Lows around 77. Chance of
showers 50 percent.
.THURSDAY THROUGH FRIDAY...Mostly cloudy with scattered showers and
isolated thunderstorms. West winds 15 to 20 mph. Highs around 87.
Lows around 78. Chance of showers 40 percent.
.FRIDAY NIGHT THROUGH SATURDAY NIGHT...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.
.SUNDAY THROUGH TUESDAY...Mostly cloudy with a chance of showers and
a slight chance of thunderstorms. Highs in the mid 80s. Lows in the
mid 70s. Chance of showers 50 percent.

$$

MPZ002-003-152215-
Tinian-Saipan-
346 PM ChST Tue Sep 15 2026

.TONIGHT...Cloudy with numerous showers and 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.
.WEDNESDAY...Partly sunny with scattered showers and isolated
thunderstorms. Northwest winds 10 to 15 mph. Highs around 87. Chance
of showers 40 percent.
.WEDNESDAY NIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. West winds 10 to 15 mph. Lows around 78. Chance of
showers 30 percent.
.THURSDAY THROUGH FRIDAY...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.
.FRIDAY NIGHT THROUGH TUESDAY...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 40 percent.

$$