Zone Forecast Product
Issued by NWS Tiyan, Guam

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FPMY50 PGUM 020500
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
300 PM ChST Tue Sep 2 2025

GUZ001-MPZ001-022100-
Guam-Rota-
300 PM ChST Tue Sep 2 2025

.TONIGHT...Mostly cloudy with numerous showers and isolated
thunderstorms. South winds around 10 mph in the evening becoming
light. Lows around 78. Chance of showers 60 percent.
.WEDNESDAY...Partly sunny with scattered showers and isolated
thunderstorms. East winds 10 to 15 mph. Highs around 87. Chance of
showers 30 percent.
.WEDNESDAY NIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. East winds 10 to 15 mph. Lows around 78. Chance of
showers 40 percent.
.THURSDAY...Partly sunny with scattered showers and isolated
thunderstorms. East winds 10 to 15 mph. Highs around 87. Chance of
showers 30 percent.
.THURSDAY NIGHT...Partly cloudy with isolated showers and
thunderstorms. East winds 10 to 15 mph. Lows around 78. Chance of
showers 20 percent.
.FRIDAY...Partly sunny with isolated showers and thunderstorms. East
winds 10 to 15 mph. Highs around 87. Chance of showers 20 percent.
.FRIDAY NIGHT...Partly cloudy with a 20 percent chance of showers
and thunderstorms. Lows in the upper 70s.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. A 20 percent chance of
showers and thunderstorms. Highs in the upper 80s. Lows in the upper
70s.
.SUNDAY THROUGH TUESDAY...Partly cloudy with a 20 percent chance of
showers and thunderstorms. Highs in the upper 80s. Lows in the upper
70s.

$$

MPZ002-003-022100-
Tinian-Saipan-
300 PM ChST Tue Sep 2 2025

.TONIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. Southeast winds 10 to 15 mph in the evening becoming
light. Lows around 78. Chance of showers 50 percent.
.WEDNESDAY...Partly cloudy with isolated showers and thunderstorms.
Southeast winds 10 to 15 mph. Highs around 86. Chance of showers
20 percent.
.WEDNESDAY NIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. East winds 10 to 15 mph in the evening becoming
light. Lows around 79. Chance of showers 30 percent.
.THURSDAY AND THURSDAY NIGHT...Mostly cloudy. Isolated showers and
thunderstorms. East winds 10 to 15 mph. Highs around 87. Lows around
78. Chance of showers 20 percent.
.FRIDAY...Partly cloudy with isolated showers and thunderstorms.
East winds 10 to 15 mph. Highs around 87. Chance of showers
20 percent.
.FRIDAY NIGHT...Partly cloudy with a 20 percent chance of showers
and thunderstorms. Lows in the upper 70s.
.SATURDAY...Partly cloudy with a 20 percent chance of showers. Highs
in the upper 80s.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy with a 20 percent chance
of showers and thunderstorms. Lows in the upper 70s. Highs in the
upper 80s.
.SUNDAY NIGHT THROUGH TUESDAY...Partly cloudy with a 20 percent
chance of showers. Lows in the upper 70s. Highs in the upper 80s.

$$