401
FPMY50 PGUM 040542
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
342 PM ChST Thu Sep 4 2025

GUZ001-MPZ001>003-042100-
Guam-Rota-Tinian-Saipan-
342 PM ChST Thu Sep 4 2025

.TONIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. East winds 10 to 15 mph. Lows around 79. Chance of
showers 40 percent.
.FRIDAY...Partly sunny with scattered showers and isolated
thunderstorms. East winds 10 to 15 mph. Highs around 87. Chance of
showers 40 percent.
.FRIDAY NIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. East winds 10 to 15 mph. Lows around 79. Chance of
showers 30 percent.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. Scattered showers and
isolated thunderstorms. Northeast to east winds 5 to 15 mph. Highs
around 87. Lows around 79. Chance of showers 30 percent.
.SUNDAY...Partly cloudy with isolated showers and thunderstorms.
East 5 to 10 mph. Highs around 87. Chance of showers 20 percent.
.SUNDAY NIGHT AND MONDAY...Partly cloudy with a 20 percent chance of
showers. Lows in the upper 70s. Highs in the upper 80s.
.MONDAY NIGHT...Mostly cloudy with a 30 percent chance of showers.
Lows in the upper 70s.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy with a 20 percent chance
of showers. Highs in the upper 80s. Lows in the upper 70s.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with a 20 percent chance
of showers and thunderstorms. Highs in the upper 80s. Lows in the
upper 70s.

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