880
FPMY50 PGUM 180515
ZFPGUM
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS
NATIONAL WEATHER SERVICE TIYAN GU
315 PM CHST MON AUG 18 2025
GUZ001-MPZ001-182000-
GUAM-ROTA-
315 PM CHST MON AUG 18 2025
TONIGHT
BREEZY. MOSTLY CLOUDY WITH SCATTERED SHOWERS BECOMING
CLOUDY WITH WIDESPREAD LOCALLY HEAVY SHOWERS LATE EVENING. EAST
WINDS 15 TO 25 MPH. GUSTS TO 35 MPH POSSIBLE NEAR HEAVIER SHOWERS.
LOWS AROUND 75. CHANCE OF SHOWERS 80 PERCENT.
TUESDAY
BREEZY AT TIMES. CLOUDY WITH NUMEROUS SHOWERS BECOMING
MOSTLY CLOUDY WITH SCATTERED SHOWERS AROUND NOON. ISOLATED
THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE IN THE MORNING.
SOUTHEAST WINDS 15 TO 25 MPH. HIGHS AROUND 88. CHANCE OF SHOWERS 60
PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. SOUTHEAST WINDS 10 TO 15 MPH. LOWS AROUND 79. CHANCE
OF SHOWERS 40 PERCENT.
WEDNESDAY THROUGH THURSDAY
PARTLY CLOUDY WITH ISOLATED SHOWERS
AND THUNDERSTORMS. NORTHEAST WINDS 5 TO 15 MPH. HIGHS AROUND 88.
LOWS AROUND 79. 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 THROUGH SUNDAY
MOSTLY CLOUDY WITH A 20 PERCENT
CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 70S. HIGHS IN
THE UPPER 80S.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SHOWERS
AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 70S.
MONDAY
PARTLY SUNNY WITH A 20 PERCENT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE UPPER 80S.
MPZ002-003-182000-
TINIAN-SAIPAN-
315 PM CHST MON AUG 18 2025
TONIGHT
BREEZY AT TIMES. MOSTLY CLOUDY WITH SCATTERED SHOWERS
BECOMING CLOUDY WITH NUMEROUS SHOWERS AROUND MIDNIGHT. ISOLATED
THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE STARTING AROUND
MIDNIGHT. EAST WINDS 15 TO 25 MPH. GUSTS TO 35 MPH POSSIBLE NEAR
HEAVIER SHOWERS. LOWS AROUND 76. CHANCE OF SHOWERS 60 PERCENT.
TUESDAY AND TUESDAY NIGHT
PARTLY SUNNY WITH SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. EAST WINDS 15 TO 20 MPH BECOMING SOUTHEAST 10
TO 15 MPH IN THE EVENING. HIGHS AROUND 87. LOWS AROUND 78. CHANCE OF
SHOWERS 40 PERCENT.
WEDNESDAY THROUGH THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS. EAST WINDS 10 TO 15 MPH. HIGHS AROUND 88. LOWS AROUND
78. HIGHS AROUND 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 UPPER 80S.
SUNDAY NIGHT AND MONDAY
MOSTLY CLOUDY. A 30 PERCENT CHANCE OF
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 70S.
HIGHS IN THE UPPER 80S.
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