315
FPMY50 PGUM 171759
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
359 AM ChST Sat Oct 18 2025

GUZ001-MPZ001>003-180815-
Guam-Rota-Tinian-Saipan-
359 AM ChST Sat Oct 18 2025

.TODAY...Breezy. Mostly cloudy with scattered showers. East winds
15 to 25 mph with occasional gusts to 35 mph. Highs near 87. Chance
of showers 40 percent.
.TONIGHT...Partly cloudy with isolated showers. East winds 15 to 20
mph. Lows around 78. Chance of showers 20 percent.
.SUNDAY...Partly sunny with isolated showers. East winds 10 to
15 mph. Highs around 87. Chance of showers 20 percent.
.SUNDAY NIGHT AND MONDAY...Mostly cloudy. Scattered showers. East
winds 10 to 15 mph. Lows around 78. Highs around 86. Chance of
showers 40 percent.
.MONDAY NIGHT THROUGH THURSDAY...Mostly cloudy with a 30 percent
chance of showers. Lows in the upper 70s. Highs in the mid 80s.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. A chance of showers and
a slight chance of thunderstorms. Lows in the upper 70s. Highs in
the mid 80s. Chance of showers 30 percent.

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