430
FPMY50 PGUM 220512
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
312 PM ChST Mon Sep 22 2025

GUZ001-MPZ001>003-222000-
Guam-Rota-Tinian-Saipan-
312 PM ChST Mon Sep 22 2025

.TONIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. East winds 10 to 15 mph. Lows around 78. Chance of
showers 40 percent.
.TUESDAY...Partly sunny with scattered showers and isolated
thunderstorms. Southeast winds 10 to 15 mph. Highs around 87. Chance
of showers 40 percent.
.TUESDAY NIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. East winds 10 to 15 mph. Lows around 78. Chance of
showers 40 percent.
.WEDNESDAY THROUGH THURSDAY NIGHT...Partly cloudy with isolated
showers. East winds 10 to 15 mph. Highs around 88. Lows around 79.
Chance of showers 20 percent.
.FRIDAY...Partly sunny with a 30 percent chance of showers and a
slight chance of thunderstorms. Highs in the upper 80s.
.FRIDAY NIGHT THROUGH SUNDAY...Partly cloudy with a 20 percent
chance of showers and thunderstorms. Lows around 79. Highs in the
upper 80s.
.SUNDAY NIGHT...Mostly cloudy with a 30 percent chance of showers
and a slight chance of thunderstorms. Lows around 79.
.MONDAY...Partly cloudy with a 20 percent chance of showers and
thunderstorms. Highs in the upper 80s.

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