616
FPMY50 PGUM 180536
ZFPGUM
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS
NATIONAL WEATHER SERVICE TIYAN GU
336 PM CHST FRI SEP 18 2026
GUZ001-MPZ001-182100-
GUAM-ROTA-
336 PM CHST FRI SEP 18 2026
TONIGHT
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE FOR GUAM AFTER
MIDNIGHT. WEST WINDS 10 TO 15 MPH. OCCASIONAL GUSTS TO 25 MPH NEAR
HEAVIER SHOWERS. LOWS AROUND 77. CHANCE OF SHOWERS 50 PERCENT.
SATURDAY
PARTLY SUNNY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. SOUTHWEST WINDS 10 TO 15 MPH. HIGHS AROUND 87. CHANCE
OF SHOWERS 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. WEST WINDS AROUND 10 MPH IN THE EVENING BECOMING
LIGHT. LOWS AROUND 77. CHANCE OF SHOWERS 40 PERCENT.
SUNDAY
PARTLY SUNNY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LIGHT AND VARIABLE WINDS. HIGHS AROUND 87. CHANCE OF
SHOWERS 40 PERCENT.
SUNDAY NIGHT
MOSTLY CLOUDY WITH SCATTERED SHOWERS, BECOMING CLOUDY
WITH NUMEROUS SHOWERS AFTER MIDNIGHT. ISOLATED THUNDERSTORMS. LIGHT
AND VARIABLE WINDS. LOWS AROUND 75. CHANCE OF SHOWERS 60 PERCENT.
MONDAY
CLOUDY WITH SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
LIGHT AND VARIABLE WINDS BECOMING SOUTHEAST AROUND 10 MPH IN THE
AFTERNOON. HIGHS AROUND 87. CHANCE OF SHOWERS 50 PERCENT.
MONDAY NIGHT THROUGH THURSDAY
MOSTLY CLOUDY WITH A 50 PERCENT
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE
UPPER 70S. HIGHS IN THE UPPER 80S.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLOUDY. A 30 PERCENT CHANCE OF
SHOWERS. LOWS IN THE UPPER 70S. HIGHS IN THE UPPER 80S.
MPZ002-003-182100-
TINIAN-SAIPAN-
336 PM CHST FRI SEP 18 2026
TONIGHT
MOSTLY CLOUDY WITH SCATTERED SHOWERS. SOUTHWEST WINDS 10
TO 15 MPH. LOWS AROUND 78. CHANCE OF SHOWERS 30 PERCENT.
SATURDAY
PARTLY SUNNY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. SOUTHWEST WINDS 10 TO 15 MPH. HIGHS AROUND 87. CHANCE
OF SHOWERS 30 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LIGHT AND VARIABLE WINDS. LOWS AROUND 78. CHANCE OF
SHOWERS 30 PERCENT.
SUNDAY
PARTLY SUNNY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LIGHT AND VARIABLE WINDS. HIGHS AROUND 87. CHANCE OF
SHOWERS 30 PERCENT.
SUNDAY NIGHT
MOSTLY CLOUDY WITH SCATTERED SHOWERS, BECOMING CLOUDY
WITH NUMEROUS SHOWERS AFTER MIDNIGHT. ISOLATED THUNDERSTORMS. LIGHT
AND VARIABLE WINDS. LOWS AROUND 75. CHANCE OF SHOWERS 60 PERCENT.
MONDAY
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LIGHT AND VARIABLE WINDS BECOMING SOUTHEAST AROUND 10
MPH IN THE AFTERNOON. HIGHS AROUND 87. CHANCE OF SHOWERS 40 PERCENT.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLOUDY WITH A 30 PERCENT
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE
UPPER 70S. HIGHS IN THE UPPER 80S.
WEDNESDAY NIGHT THROUGH FRIDAY
MOSTLY CLOUDY WITH A 20 PERCENT
CHANCE OF SHOWERS. LOWS IN THE UPPER 70S. HIGHS IN THE UPPER 80S.
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