682
FPMY50 PGUM 181820
ZFPGUM

Zone Forecast for Guam and the Northern Marianas
National Weather Service Tiyan GU
420 AM ChST Tue Aug 19 2025

GUZ001-190830-
Guam-
420 AM ChST Tue Aug 19 2025

.TODAY...Cloudy in the morning then becoming partly sunny. Scattered
showers and isolated thunderstorms. Southeast winds 10 to 15 mph.
Highs near 87. Chance of showers 50 percent.
.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 40 percent.
.WEDNESDAY...Partly cloudy with isolated showers and thunderstorms.
East winds 10 to 15 mph. Highs near 88. Chance of showers 20
percent.
.WEDNESDAY NIGHT...Partly cloudy with isolated showers and
thunderstorms. Light and variable winds becoming northeast around
10 mph after midnight. Lows around 78. Chance of showers 20 percent.
.THURSDAY...Partly sunny with isolated showers and thunderstorms.
Northeast winds 10 to 15 mph. Highs near 88. Chance of showers 20
percent.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. A 30 percent chance of
showers and a slight chance of thunderstorms. Lows in the upper 70s.
Highs in the upper 80s.
.FRIDAY NIGHT...Mostly cloudy with a 20 percent chance of showers
and thunderstorms. Lows in the upper 70s.
.SATURDAY...Partly sunny with a 30 percent chance of showers and a
slight chance of thunderstorms. 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 mid
80s.
.SUNDAY NIGHT AND MONDAY...Mostly cloudy. A chance of showers and a
slight chance of thunderstorms. Lows around 80. Highs in the upper
80s. Chance of showers 30 percent.

$$

MPZ001>003-190830-
Rota-Tinian-Saipan-
420 AM ChST Tue Aug 19 2025

.TODAY...Breezy. Partly sunny with isolated thunderstorms. Scattered
showers in the morning, then isolated showers in the afternoon.
Southeast winds 15 to 25 mph decreasing to around 10 mph in the
afternoon. Highs around 87. Chance of showers 30 percent.
.TONIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. Light and variable winds. Lows around 79. Chance of
showers 20 percent.
.WEDNESDAY...Partly cloudy with isolated showers and thunderstorms.
East winds 10 to 15 mph. Highs near 88. Chance of showers 20
percent.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy with isolated showers
and thunderstorms. East winds 10 to 15 mph. Lows around 79. Highs
near 87. Chance of showers 20 percent.
.THURSDAY NIGHT THROUGH SATURDAY...Mostly cloudy with a 20 percent
chance of showers and thunderstorms. Lows in the upper 70s. Highs in
the upper 80s.
.SATURDAY NIGHT...Mostly cloudy with a 30 percent chance of showers
and a slight chance of thunderstorms. Lows in the upper 70s.
.SUNDAY...Partly sunny with a 20 percent chance of showers and
thunderstorms. Highs in the mid 80s.
.SUNDAY NIGHT AND MONDAY...Mostly cloudy. A chance of showers and a
slight chance of thunderstorms. Lows in the lower 80s. Highs in the
upper 80s. Chance of showers 30 percent.

$$