735
FPMY50 PGUM 171729
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
329 AM ChST Mon Aug 18 2025

GUZ001-MPZ001>003-180800-
Guam-Rota-Tinian-Saipan-
329 AM ChST Mon Aug 18 2025

.TODAY...Partly sunny with scattered showers and isolated
thunderstorms. East winds 10 to 15 mph. Highs around 88. Chance of
showers 30 percent.
.TONIGHT...Partly cloudy with isolated showers and
thunderstorms. East winds 10 to 15 mph. Lows around 79. Chance of
showers 20 percent.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Scattered showers and
isolated thunderstorms. Southeast winds 15 to 20 mph. Highs around
87. Lows around 78. Chance of showers 40 percent.
.WEDNESDAY...Partly sunny with isolated showers and thunderstorms.
East winds 5 to 10 mph. Highs around 88. Chance of showers 20
percent.
.WEDNESDAY NIGHT...Mostly cloudy with a 30 percent chance of showers
and a slight chance of thunderstorms. Lows in the upper 70s.
.THURSDAY...Partly sunny with a 20 percent chance of showers and
thunderstorms. Highs in the upper 80s.
.THURSDAY NIGHT...Partly cloudy with a 20 percent chance of showers
and thunderstorms. Lows in the upper 70s.
.FRIDAY...Partly sunny with a 20 percent chance of showers and
thunderstorms. Highs in the upper 80s.
.FRIDAY NIGHT...Mostly cloudy with a 30 percent chance of showers
and a slight chance of thunderstorms. Lows in the upper 70s.
.SATURDAY THROUGH SUNDAY...Mostly cloudy with a 20 percent chance of
showers and thunderstorms. Highs in the upper 80s. Lows in the upper
70s.

$$