910
FPMY50 PGUM 180617
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
417 PM ChST Tue Aug 18 2026

GUZ001-MPZ001>003-182200-
Guam-Rota-Tinian-Saipan-
417 PM ChST Tue Aug 18 2026

.TONIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. Light and variable winds becoming north around 10 mph
after midnight. Lows around 77. Chance of showers 30 percent.
.WEDNESDAY...Partly sunny with scattered showers and isolated
thunderstorms. North winds 10 to 15 mph. Highs around 86. Chance of
showers 40 percent.
.WEDNESDAY NIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. Northeast winds 10 to 15 mph. Lows around 77. Chance
of showers 30 percent.
.THURSDAY...Partly sunny with scattered showers and isolated
thunderstorms. Northeast winds 10 to 15 mph. Highs around 87. Chance
of showers 30 percent.
.THURSDAY NIGHT...Mostly cloudy with isolated showers. Northeast
winds around 10 mph in the evening becoming light. Lows around 78.
Chance of showers 20 percent.
.FRIDAY...Partly sunny with isolated showers. Light and variable
winds becoming north around 10 mph in the afternoon. Highs around
87. Chance of showers 20 percent.
.FRIDAY NIGHT THROUGH SATURDAY...Mostly cloudy with a 30 percent
chance of showers and a slight chance of thunderstorms. Lows in the
upper 70s. Highs in the upper 80s.
.SATURDAY NIGHT THROUGH TUESDAY...Mostly cloudy with a 40 percent
chance of showers and a slight chance of thunderstorms. Lows in the
upper 70s. Highs in the upper 80s.

$$