FPMY50 PGUM 201759

ZFPGUM



Zone Forecast for Guam and the Northern Marianas

National Weather Service Tiyan GU

359 AM ChST Sun Jun 21 2026



GUZ001-MPZ001>003-210900-

Guam-Rota-Tinian-Saipan-

359 AM ChST Sun Jun 21 2026



.TODAY...Partly sunny with scattered showers. Light and variable 

winds. Highs near 88. Chance of showers 30 percent.

.TONIGHT...Partly cloudy with isolated showers. Light and variable

winds. Lows around 79. Chance of showers 20 percent.

.MONDAY...Partly cloudy. Isolated showers in the morning, becoming 

scattered showers and isolated thunderstorms in the afternoon. Light

and variable winds. Highs around 88. Chance of showers 30 percent. 

.MONDAY NIGHT...Mostly cloudy with isolated showers. Light and 

variable winds. Lows around 79. Chance of showers 20 percent. 

.TUESDAY...Partly cloudy. Isolated showers in the morning, becoming 

scattered in the afternoon. Isolated thunderstorms. Light and 

variable winds. Highs around 88. 

.TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Partly cloudy with a 20 

percent chance of showers. Lows in the upper 70s. Highs in the upper

80s.

.THURSDAY AND THURSDAY NIGHT...Mostly cloudy with a 30 percent 

chance of showers and a slight chance of thunderstorms. Highs in the 

upper 80s. Lows in the upper 70s.

.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. A 20 percent chance of 

showers and thunderstorms. Highs in the upper 80s. Lows in the upper 

70s.

.SATURDAY...Partly cloudy with a 20 percent chance of showers. Highs

in the upper 80s.



$$