536
FPMY50 PGUM 180531
ZFPGUM
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS
NATIONAL WEATHER SERVICE TIYAN GU
331 PM CHST THU JUN 18 2026
GUZ001-MPZ001-182245-
GUAM-ROTA-
331 PM CHST THU JUN 18 2026
TONIGHT
CLOUDY WITH NUMEROUS LOCALLY HEAVY SHOWERS AND ISOLATED
THUNDERSTORMS. EAST WINDS 10 TO 15 MPH. GUSTS OF 25 MPH POSSIBLE
WITH HEAVIER SHOWERS AND THUNDERSTORMS. LOWS AROUND 77. CHANCE OF
SHOWERS 70 PERCENT.
JUNETEENTH
MOSTLY CLOUDY. NUMEROUS LOCALLY HEAVY SHOWERS AND
ISOLATED THUNDERSTORMS IN THE MORNING, THEN SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS IN THE AFTERNOON. SOUTHEAST WINDS 10 TO 15
MPH. GUSTS OF 25 MPH POSSIBLE WITH HEAVIER SHOWERS AND THUNDERSTORMS.
HIGHS AROUND 87. CHANCE OF SHOWERS 70 PERCENT.
FRIDAY NIGHT
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. SOUTHEAST WINDS 10 TO 15 MPH. LOWS AROUND 77. CHANCE
OF SHOWERS 30 PERCENT.
SATURDAY AND SATURDAY NIGHT
PARTLY CLOUDY WITH ISOLATED SHOWERS.
SOUTHEAST WINDS 5 TO 10 MPH. HIGHS AROUND 89. LOWS AROUND 77. CHANCE
OF SHOWERS 20 PERCENT.
SUNDAY
PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS IN
THE MORNING. A 30 PERCENT CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON FOR GUAM. LIGHT AND VARIABLE WINDS.
HIGHS AROUND 89.
SUNDAY NIGHT
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SHOWERS
AND THUNDERSTORMS. LOWS IN THE UPPER 70S.
MONDAY
PARTLY CLOUDYWITH ISOLATED SHOWERS AND THUNDERSTORMS IN
THE MORNING. A 30 PERCENT CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 80S.
MONDAY NIGHT THROUGH THURSDAY
PARTLY CLOUDY WITH A 20 PERCENT
CHANCE OF SHOWERS. LOWS IN THE UPPER 70S. HIGHS IN THE UPPER 80S.
MPZ002-003-182245-
TINIAN-SAIPAN-
331 PM CHST THU JUN 18 2026
TONIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS IN THE EVENING, THEN NUMEROUS LOCALLY HEAVY SHOWERS AND
ISOLATED THUNDERSTORMS AFTER MIDNIGHT. EAST WINDS 15 TO 20 MPH.
GUSTS OF 25 MPH POSSIBLE WITH HEAVIER SHOWERS AND THUNDERSTORMS. LOWS
AROUND 79. CHANCE OF SHOWERS 60 PERCENT.
JUNETEENTH
MOSTLY CLOUDY. NUMEROUS LOCALLY HEAVY SHOWERS AND
ISOLATED THUNDERSTORMS IN THE MORNING, THEN SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS IN THE AFTERNOON. SOUTHEAST WINDS 15 TO 20
MPH. GUSTS OF 25 MPH POSSIBLE WITH HEAVIER SHOWERS AND THUNDERSTORMS.
HIGHS AROUND 87. CHANCE OF SHOWERS 60 PERCENT.
FRIDAY NIGHT
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. SOUTHEAST WINDS 10 TO 15 MPH. LOWS AROUND 79. CHANCE
OF SHOWERS 30 PERCENT.
SATURDAY AND SATURDAY NIGHT
PARTLY CLOUDY WITH ISOLATED SHOWERS
AND THUNDERSTORMS. SOUTHEAST WINDS AROUND 10 MPH. HIGHS AROUND 88.
LOWS AROUND 79. CHANCE OF SHOWERS 20 PERCENT.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS IN THE
MORNING, THEN A 30 PERCENT CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. LIGHT AND VARIABLE WINDS. HIGHS
AROUND 88.
SUNDAY NIGHT THROUGH THURSDAY
PARTLY CLOUDY WITH A 20 PERCENT
CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 70S. HIGHS IN
THE UPPER 80S.
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