Zone Forecast Product
Issued by NWS Tiyan, Guam

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794
FPMY50 PGUM 100852 AAA
ZFPGUM

Zone Forecast for Guam and the Northern Marianas...UPDATED
National Weather Service Tiyan GU
652 PM ChST Sun Aug 10 2025

GUZ001-110100-
Guam-
652 PM ChST Sun Aug 10 2025

Updated to increase shower coverage for Guam.

.REST OF TONIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. Southeast winds around 10 mph in the evening becoming
light. Lows around 77. Chance of showers 40 percent.
.MONDAY...Partly sunny with scattered showers and isolated
thunderstorms. Light and variable winds. Highs around 88. Chance of
showers 30 percent.
.MONDAY NIGHT...Partly cloudy. Isolated showers and thunderstorms.
East winds around 10 mph in the evening becoming light. Lows around
77. Chance of showers 20 percent.
.TUESDAY...Partly cloudy with isolated showers becoming partly sunny
with scattered showers in the afternoon. Isolated thunderstorms.
Light and variable winds. Highs around 88. Chance of showers 30
percent.
.TUESDAY NIGHT...Partly cloudy with isolated showers. Light and
variable winds. Lows around 77. Chance of showers 20 percent.
.WEDNESDAY...Partly cloudy with a 20 percent chance of showers
becoming partly sunny with a 30 percent chance of showers and a
slight chance of thunderstorms in the afternoon. Light and variable
winds. Highs around 88.
.WEDNESDAY NIGHT THROUGH SATURDAY...Partly cloudy with a 20 percent
chance of showers. Lows in the upper 70s. Highs in the upper 80s.
.SATURDAY NIGHT AND SUNDAY...Mostly cloudy. A 20 percent chance of
showers and thunderstorms. Lows in the upper 70s. Highs in the upper
80s.

$$

MPZ001>003-110100-
Rota-Tinian-Saipan-
652 PM ChST Sun Aug 10 2025

Updated to increase showers across the CNMI.

.REST OF TONIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. East winds around 10 mph in the evening becoming
light. Lows around 78. Chance of showers 50 percent.
.MONDAY...Partly sunny with scattered showers and isolated
thunderstorms. Light and variable winds becoming east around 10 mph
in the afternoon. Highs around 87. Chance of showers 30 percent.
.MONDAY NIGHT AND TUESDAY...Partly cloudy with isolated showers and
thunderstorms. East winds around 10 mph in the evening becoming
light. Lows around 78. Highs around 87. Chance of showers 20
percent.
.TUESDAY NIGHT...Partly cloudy with isolated showers. Light and
variable winds. Highs around 87. Lows around 78. Chance of showers
20 percent.
.WEDNESDAY...Partly cloudy with a 20 percent chance of showers.
Light and variable winds. Highs around 88.
.WEDNESDAY NIGHT THROUGH SATURDAY...Partly cloudy with a 20 percent
chance of showers. Lows in the upper 70s. Highs in the upper 80s.
.SATURDAY NIGHT AND SUNDAY...Mostly cloudy. A 20 percent chance of
showers and thunderstorms. Lows in the upper 70s. Highs in the upper
80s.

$$