851
FPMY50 PGUM 300615
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
415 PM ChST Sat Aug 30 2025

GUZ001-MPZ001>003-302000-
Guam-Rota-Tinian-Saipan-
415 PM ChST Sat Aug 30 2025

.TONIGHT...Cloudy. Scattered showers in the evening, becoming
numerous heavy showers near midnight. Isolated thunderstorms. South
winds 15 to 20 mph with gusts to 30 mph possible near heavier showers.
Lows around 76. Chance of showers 60 percent.
.SUNDAY...Mostly cloudy with scattered showers and isolated
thunderstorms. South winds 10 to 15 mph. Highs near 87. Chance of
showers 40 percent.
.SUNDAY NIGHT...Mostly cloudy with isolated showers. Southeast winds
around 10 mph. Lows around 78. Chance of showers 20 percent.
.LABOR DAY...Partly sunny with scattered showers. Northeast winds
10 to 15 mph. Highs near 87. Chance of showers 30 percent.
.MONDAY NIGHT AND TUESDAY...Mostly cloudy. Scattered showers and
isolated thunderstorms. East winds 15 to 20 mph. Lows around 78.
Highs around 87. Chance of showers 40 percent.
.TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy with a 40 percent
chance of showers and a slight chance of thunderstorms. Lows in the
upper 70s. Highs in the upper 80s.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A 30 percent chance
of showers. Lows in the upper 70s. Highs in the upper 80s.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. A 20 percent chance of
showers. Lows in the upper 70s. Highs in the upper 80s.
.FRIDAY NIGHT AND SATURDAY...Mostly cloudy. A 30 percent chance of
showers. Lows in the upper 70s. Highs in the upper 80s.

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