661
FPMY50 PGUM 180556
ZFPGUM

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

GUZ001-MPZ001>003-182000-
Guam-Rota-Tinian-Saipan-
356 PM ChST Sat Oct 18 2025

.TONIGHT...Cloudy and breezy. Scattered heavy showers and isolated
thunderstorms. East winds 15 to 25 mph. Occasional gusts to 35 mph
possible near heavier showers in the early evening. Lows around 76.
Chance of showers 50 percent.
.SUNDAY...Partly sunny with scattered showers. East winds 15 to
20 mph. Highs near 87. Chance of showers 30 percent.
.SUNDAY NIGHT AND MONDAY...Mostly cloudy with scattered showers and
isolated thunderstorms. East winds 15 to 20 mph, becoming 10 to 15
mph Monday. Lows around 77. Highs near 87. Chance of showers 40
percent.
.MONDAY NIGHT...Mostly cloudy with isolated showers. East winds
10 to 15 mph. Lows around 78. Chance of showers 20 percent.
.TUESDAY...Partly sunny with scattered showers. Southeast winds
10 to 15 mph. Highs near 88. Chance of showers 30 percent.
.TUESDAY NIGHT THROUGH THURSDAY...Mostly cloudy with a 30 percent
chance of showers. Lows in the upper 70s. Highs in the upper 80s.
.THURSDAY NIGHT...Mostly cloudy with a 30 percent chance of showers
and a slight chance of thunderstorms. Lows in the upper 70s.
.FRIDAY AND SATURDAY...Partly cloudy. A 20 percent chance of
showers. Highs in the upper 80s. Lows in the upper 70s.

$$