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

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Partly Cloudy

29°C

85°F

Humidity 77%
Wind Speed SE 17 G 31 km/h
Barometer 1010.4 mb (29.86 in)
Dewpoint 25°C (77°F)
Visibility 16 km
Heat Index36°C (96°F)
Last update 13 Jul 9:54 am ChST
Extended Forecast for

Sinajana GU

  • Today

    Today: Scattered showers and thunderstorms. Partly sunny, with a high near 30. Southeast wind 16 to 21 km/h. Chance of precipitation is 30%.

    High: 30 °C

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 26. South southeast wind 11 to 16 km/h. Chance of precipitation is 30%.

    Low: 26 °C

    Scattered
    Showers

  • Monday

    Monday: Scattered showers and thunderstorms. Partly sunny, with a high near 30. East southeast wind 8 to 14 km/h. Chance of precipitation is 30%.

    High: 30 °C

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 26. South southeast wind 10 to 14 km/h. Chance of precipitation is 30%.

    Low: 26 °C

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers. Partly sunny, with a high near 30. Southeast wind 11 to 16 km/h. Chance of precipitation is 30%.

    High: 30 °C

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 26.

    Low: 26 °C

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers. Partly sunny, with a high near 30.

    High: 30 °C

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 26.

    Low: 26 °C

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Partly sunny, with a high near 30.

    High: 30 °C

    Chance
    Showers

Detailed Forecast

Today
Scattered showers and thunderstorms. Partly sunny, with a high near 30. Southeast wind 16 to 21 km/h. Chance of precipitation is 30%.
Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 26. South southeast wind 11 to 16 km/h. Chance of precipitation is 30%.
Monday
Scattered showers and thunderstorms. Partly sunny, with a high near 30. East southeast wind 8 to 14 km/h. Chance of precipitation is 30%.
Monday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 26. South southeast wind 10 to 14 km/h. Chance of precipitation is 30%.
Tuesday
Scattered showers. Partly sunny, with a high near 30. Southeast wind 11 to 16 km/h. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 30.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 26.
Thursday
A chance of showers. Partly sunny, with a high near 30.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 26.
Friday
A chance of showers. Partly sunny, with a high near 29.
Friday Night
A chance of showers. Mostly cloudy, with a low around 26.
Saturday
A chance of showers. Partly sunny, with a high near 28.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sinajana GU
 13.47°N 144.76°E
Last Update:
6:05 am ChST Jul 13, 2025
Forecast Valid:
10am ChST Jul 13, 2025-6pm ChST Jul 19, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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