566
FPMY50 PGUM 190646
ZFPGUM
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS
NATIONAL WEATHER SERVICE TIYAN GU
446 PM CHST WED AUG 19 2026
GUZ001-MPZ001-192115-
GUAM-ROTA-
446 PM CHST WED AUG 19 2026
TONIGHT
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE. NORTHEAST WINDS 10 TO
15 MPH. LOWS AROUND 72. CHANCE OF SHOWERS 30 PERCENT.
THURSDAY
PARTLY SUNNY WITH ISOLATED SHOWERS AND THUNDERSTORMS.
NORTHEAST WINDS 5 TO 10 MPH. HIGHS AROUND 86. CHANCE OF SHOWERS 20
PERCENT.
THURSDAY NIGHT
PARTLY CLOUDY WITH ISOLATED SHOWERS. LIGHT WINDS
AROUND 5 MPH. LOWS AROUND 77. CHANCE OF SHOWERS 20 PERCENT.
FRIDAY
PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS. THEN
SCATTERED ISLAND EFFECT SHOWERS AND ISOLATED THUNDERSTORMS IN THE
AFTERNOON FOR GUAM. LIGHT AND VARIABLE WINDS. HIGHS AROUND 87.
CHANCE OF SHOWERS 30 PERCENT.
FRIDAY NIGHT
MOSTLY CLOUDY WITH ISOLATED SHOWERS. WEST WINDS
AROUND 5 MPH. LOWS AROUND 77. CHANCE OF SHOWERS 20 PERCENT.
SATURDAY
PARTLY SUNNY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. SOUTHWEST WINDS 10 TO 20 MPH. HIGHS AROUND 86. CHANCE
OF SHOWERS 30 PERCENT.
SATURDAY NIGHT AND SUNDAY
MOSTLY CLOUDY. A 30 PERCENT CHANCE OF
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. LOCALLY HEAVY SHOWERS
POSSIBLE. LOWS IN THE UPPER 70S. HIGHS IN THE MID 80S.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF SHOWERS
AND THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE. LOWS IN THE UPPER
70S.
MONDAY THROUGH WEDNESDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS
AND A SLIGHT CHANCE OF THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE.
HIGHS IN THE MID 80S. LOWS IN THE MID 70S. CHANCE OF SHOWERS 50
PERCENT.
MPZ002-003-192115-
TINIAN-SAIPAN-
446 PM CHST WED AUG 19 2026
TONIGHT
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. NORTHEAST WINDS 10 TO 15 MPH. LOCALLY HEAVY SHOWERS
AND GUSTY WINDS POSSIBLE IN THUNDERSTORMS. LOWS AROUND 75. CHANCE OF
SHOWERS 50 PERCENT.
THURSDAY
PARTLY SUNNY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. NORTHEAST WINDS 10 TO 15 MPH. HIGHS AROUND 87. CHANCE
OF SHOWERS 30 PERCENT.
THURSDAY NIGHT
MOSTLY CLOUDY WITH ISOLATED SHOWERS AND
THUNDERSTORMS. NORTHEAST WINDS 5 TO 10 MPH. LOWS AROUND 79. CHANCE
OF SHOWERS 20 PERCENT.
FRIDAY
PARTLY SUNNY WITH ISOLATED SHOWERS AND THUNDERSTORMS IN THE
MORNING, BECOMING PARTLY CLOUDY WITH SCATTERED ISLAND EFFECT SHOWERS
AND ISOLATED THUNDERSTORMS IN THE AFTERNOON. NORTHEAST WINDS 5 TO 10
MPH. HIGHS AROUND 87. CHANCE OF SHOWERS 30 PERCENT.
FRIDAY NIGHT AND SATURDAY
BREEZY. MOSTLY CLOUDY WITH SCATTERED
SHOWERS AND ISOLATED THUNDERSTORMS. LOCALLY HEAVY SHOWERS POSSIBLE.
WEST WINDS 15 TO 25 MPH. LOWS AROUND 79. HIGHS AROUND 87. CHANCE OF
SHOWERS 50 PERCENT.
SATURDAY NIGHT THROUGH WEDNESDAY
BREEZY. MOSTLY CLOUDY WITH A
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. LOCALLY
HEAVY SHOWERS POSSIBLE. LOWS IN THE UPPER 70S. HIGHS IN THE MID 80S.
CHANCE OF SHOWERS 40 PERCENT.
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