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

81°F

27°C

Humidity 84%
Wind Speed E 5 mph
Barometer 29.87 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 15 Jul 11:54 pm ChST
Extended Forecast for

Sinajana GU

  • Overnight

    Overnight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 75. East southeast wind around 10 mph. Chance of precipitation is 30%.

    Low: 75 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers and thunderstorms. Partly sunny, with a high near 86. East southeast wind 10 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 76. East wind 9 to 13 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Scattered
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 86. East southeast wind 11 to 15 mph, with gusts as high as 20 mph.

    High: 86 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 75. Southeast wind 10 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

    Low: 75 °F

    Scattered
    Showers

  • Friday

    Friday: Scattered showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Scattered
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 75.

    Low: 75 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers. Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 75.

    Low: 75 °F

    Chance
    Showers

Detailed Forecast

Overnight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 75. East southeast wind around 10 mph. Chance of precipitation is 30%.
Wednesday
Scattered showers and thunderstorms. Partly sunny, with a high near 86. East southeast wind 10 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 76. East wind 9 to 13 mph. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 86. East southeast wind 11 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 75. Southeast wind 10 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Friday
Scattered showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 75.
Saturday
A chance of showers. Partly sunny, with a high near 84.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 75.
Sunday
A chance of showers. Partly sunny, with a high near 85.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 75.
Monday
A chance of showers. Partly sunny, with a high near 84.
Monday Night
A chance of showers. Mostly cloudy, with a low around 75.
Tuesday
A chance of showers. Mostly cloudy, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sinajana GU
 13.45°N 144.74°E
Last Update:
6:05 pm ChST Jul 15, 2025
Forecast Valid:
12am ChST Jul 16, 2025-6pm ChST Jul 22, 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