530
FPMY50 PGUM 160601
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
401 PM ChST Wed Sep 16 2026

GUZ001-MPZ001-162030-
Guam-Rota-
401 PM ChST Wed Sep 16 2026

.TONIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. Locally heavy showers possible. Northwest winds 10 to
15 mph with gusts to 25 mph near heavier showers. Lows around 77.
Chance of showers 50 percent.
.THURSDAY...Partly sunny with scattered showers and isolated
thunderstorms. West winds 10 to 15 mph. Highs around 87. Chance of
showers 40 percent.
.THURSDAY NIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. West winds 10 to 15 mph. Lows around 78. Chance of
showers 40 percent.
.FRIDAY THROUGH SATURDAY...Mostly cloudy with scattered showers and
isolated thunderstorms. Southwest winds 10 to 15 mph. Highs around
87. Lows around 77. Chance of showers 40 percent.
.SATURDAY NIGHT THROUGH WEDNESDAY...Mostly cloudy with a 50 percent
chance of showers and a slight chance of thunderstorms. Lows in the
upper 70s. Highs in the mid 80s.

$$

MPZ002-003-162030-
Tinian-Saipan-
401 PM ChST Wed Sep 16 2026

.TONIGHT...Mostly cloudy with numerous showers in the evening, then
scattered showers after midnight. 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.
.THURSDAY...Partly sunny with scattered showers and isolated
thunderstorms. Northwest winds 10 to 15 mph. Highs around 87. Chance
of showers 30 percent.
.THURSDAY NIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. West winds 10 to 15 mph. Lows around 78. Chance of
showers 30 percent.
.FRIDAY THROUGH SATURDAY...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.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT..Mostly cloudy. A 40 percent
chance of showers and a slight chance of thunderstorms. Lows in the
upper 70s. Highs in the upper 80s.
.MONDAY THROUGH WEDNESDAY...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.

$$