Zone Forecast Product
Issued by NWS Tiyan, Guam

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323
FPMY50 PGUM 311729
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
329 AM ChST Fri Aug 1 2025

GUZ001-MPZ001>003-010800-
Guam-Rota-Tinian-Saipan-
329 AM ChST Fri Aug 1 2025

.TODAY...Partly sunny with scattered showers in the early morning,
becoming cloudy with numerous showers and isolated thunderstorms
before noon. Locally heavy showers possible. Light and variable
winds becoming north around 10 mph with gusts to 25 mph in the
afternoon. Highs near 86. Chance of showers 60 percent.
.TONIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. Light and variable winds. Lows around 78. Chance of
showers 40 percent.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. Scattered showers and
isolated thunderstorms. North to northeast winds 5 to 15 mph. Highs
around 87. Lows around 78. Chance of showers 30 percent.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with scattered showers and
isolated thunderstorms. Northeast to east winds 5 to 15 mph. Highs
around 87. Chance of showers 30 percent.
.MONDAY THROUGH THURSDAY...Mostly cloudy with a chance of showers
and a slight chance of thunderstorms. Highs in the upper 80s. Lows
in the upper 70s. Chance of showers 30 percent.

$$