National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Heavy Rain Fog/Mist

79°F

26°C

Humidity 94%
Wind Speed NW 16 mph
Barometer 29.86 in (1010.5 mb)
Dewpoint 77°F (25°C)
Visibility 4.00 mi
Heat Index83°F (28°C)
Last update 19 Aug 9:54 am ChST
Extended Forecast for

2 Miles SW Finegayan Station GU

Flood Advisory until August 19, 01:15pm
Click here for hazard details and duration
Flood Advisory
  •  
    Flood Advisory until August 19, 01:15pm

    NOW until 1:15pm Wed

    Flood Advisory

  • Today

    High: 86 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 84. North northeast wind 7 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

    Low: 84 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers and thunderstorms. Partly sunny, with a high near 86. Northeast wind 7 to 9 mph. Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Isolated showers. Mostly cloudy, with a low around 84. Northeast wind 5 to 7 mph becoming calm after midnight.

    Low: 84 °F

    Isolated
    Showers

  • Friday

    Friday: Isolated showers. Partly sunny, with a high near 87. Calm wind becoming north around 5 mph in the morning.

    High: 87 °F

    Isolated
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 85.

    Low: 85 °F

    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers. Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 84.

    Low: 84 °F

    Chance
    Showers

Detailed Forecast

Today
Scattered showers and thunderstorms. Mostly cloudy, with a high near 86. North northeast wind 14 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 84. North northeast wind 7 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Thursday
Scattered showers and thunderstorms. Partly sunny, with a high near 86. Northeast wind 7 to 9 mph. Chance of precipitation is 30%.
Thursday Night
Isolated showers. Mostly cloudy, with a low around 84. Northeast wind 5 to 7 mph becoming calm after midnight.
Friday
Isolated showers. Partly sunny, with a high near 87. Calm wind becoming north around 5 mph in the morning.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 85.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 86.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 84.
Sunday
A chance of showers. Partly sunny, with a high near 86.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 84.
Monday
A chance of showers. Partly sunny, with a high near 85.
Monday Night
A chance of showers. Mostly cloudy, with a low around 84.
Tuesday
A chance of showers. Partly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Finegayan Station GU
 13.56°N 144.81°E
Last Update:
6:05 am ChST Aug 19, 2026
Forecast Valid:
10am ChST Aug 19, 2026-6pm ChST Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation