Zone Forecast Product
Issued by NWS Tiyan, Guam

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057
FPMY50 PGUM 211700
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
300 AM ChST Tue Jul 22 2025

GUZ001-MPZ001>003-220900-
Guam-Rota-Tinian-Saipan-
300 AM ChST Tue Jul 22 2025

.TODAY...Partly sunny with scattered showers and isolated
thunderstorms. Light and variable winds becoming east 10 to 15 mph
in the afternoon. Highs near 86. Chance of showers 40 percent.
.TONIGHT THROUGH WEDNESDAY NIGHT...Mostly cloudy with scattered
showers and isolated thunderstorms. East winds 10 to 15 mph. Lows
around 78. Highs near 86. Chance of showers 40 percent.
.THURSDAY...Mostly cloudy with scattered showers and isolated
thunderstorms. Northeast winds 10 to 15 mph. Highs around 85. Chance
of showers 50 percent.
.THURSDAY NIGHT THROUGH SATURDAY...Breezy. Cloudy with locally heavy
showers likely and a slight chance of thunderstorms. Lows in the mid
70s. Highs in the mid 80s. Chance of showers 70 percent.
.SATURDAY NIGHT...Mostly cloudy with locally heavy showers likely
and a slight chance of thunderstorms. Lows in the upper 70s. Chance
of showers 60 percent.
.SUNDAY THROUGH MONDAY...Mostly cloudy with a chance of showers and
a slight chance of thunderstorms. Highs in the mid 80s. Lows in the
upper 70s. Chance of showers 50 percent.

$$