395
FPMY50 PGUM 181748
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
348 AM ChST Sat Sep 19 2026

GUZ001-MPZ001-191015-
Guam-Rota-
348 AM ChST Sat Sep 19 2026

.TODAY...Partly sunny with scattered showers and isolated
thunderstorms. Southwest winds 10 to 15 mph. Highs around 87. Chance
of showers 50 percent.
.TONIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. West winds around 10 mph in the evening becoming
light. Lows around 77. Chance of showers 40 percent.
.SUNDAY...Partly sunny with scattered showers and isolated
thunderstorms. Light and variable winds. Highs around 87. Chance of
showers 40 percent.
.SUNDAY NIGHT...Mostly cloudy with scattered showers, becoming cloudy
with numerous showers after midnight. Isolated thunderstorms. Light
and variable winds. Lows around 75. Chance of showers 60 percent.
.MONDAY...Cloudy with scattered showers and isolated thunderstorms.
Light and variable winds becoming southeast around 10 mph in the
afternoon. Highs around 87. Chance of showers 50 percent.
.MONDAY NIGHT THROUGH THURSDAY...Mostly cloudy with a 50 percent
chance of showers and a slight chance of thunderstorms. Lows in the
upper 70s. Highs in the upper 80s.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. A 30 percent chance of
showers. Lows in the upper 70s. Highs in the upper 80s.

$$

MPZ002-003-191015-
Tinian-Saipan-
348 AM ChST Sat Sep 19 2026

.TODAY...Partly sunny with scattered showers and isolated
thunderstorms. Southwest winds 10 to 15 mph. Highs around 87. Chance
of showers 30 percent.
.TONIGHT...Mostly cloudy. Scattered showers and isolated
thunderstorms. Light and variable winds. Lows around 78. Chance of
showers 40 percent.
.SUNDAY...Partly sunny with scattered showers and isolated
thunderstorms. Light and variable winds. Highs around 87. Chance of
showers 30 percent.
.SUNDAY NIGHT...Mostly cloudy with scattered showers, becoming cloudy
with numerous showers after midnight. Isolated thunderstorms. Light
and variable winds. Lows around 75. Chance of showers 60 percent.
.MONDAY...Mostly cloudy with scattered showers and isolated
thunderstorms. Light and variable winds becoming southeast around 10
mph in the afternoon. Highs around 87. Chance of showers 40 percent.
.MONDAY NIGHT THROUGH WEDNESDAY...Mostly cloudy with a 30 percent
chance of showers and a slight chance of thunderstorms. Lows in the
upper 70s. Highs in the upper 80s.
.WEDNESDAY NIGHT THROUGH FRIDAY...Mostly cloudy with a 20 percent
chance of showers. Lows in the upper 70s. Highs in the upper 80s.

$$