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

83°F

28°C

Humidity 88%
Wind Speed SE 6 mph
Barometer 29.86 in (1010.4 mb)
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 21 Sep 10:54 am ChST
Extended Forecast for

Agana Heights GU

  • Today

    Today: Scattered showers and thunderstorms. Partly sunny, with a high near 87. South wind around 8 mph. Chance of precipitation is 30%.

    High: 87 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. South wind around 6 mph becoming calm after midnight. Chance of precipitation is 40%.

    Low: 78 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a high near 86. Light south southeast wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 60%.

    High: 86 °F

    Heavy Rain

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 78. South wind 6 to 8 mph. Chance of precipitation is 60%.

    Low: 78 °F

    Heavy Rain

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 86. South wind 7 to 11 mph. Chance of precipitation is 60%.

    High: 86 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers. Mostly cloudy, with a high near 86.

    High: 86 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 86.

    High: 86 °F

    Chance
    Showers

Detailed Forecast

Today
Scattered showers and thunderstorms. Partly sunny, with a high near 87. South wind around 8 mph. Chance of precipitation is 30%.
Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. South wind around 6 mph becoming calm after midnight. Chance of precipitation is 40%.
Tuesday
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a high near 86. Light south southeast wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 78. South wind 6 to 8 mph. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 86. South wind 7 to 11 mph. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 78.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 86.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 78.
Friday
A chance of showers. Mostly cloudy, with a high near 86.
Friday Night
A chance of showers. Mostly cloudy, with a low around 78.
Saturday
A chance of showers. Partly sunny, with a high near 86.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 78.
Sunday
A chance of showers. Partly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Agana Heights GU
 13.47°N 144.74°E
Last Update:
6:06 am ChST Sep 21, 2026
Forecast Valid:
11am ChST Sep 21, 2026-6pm ChST Sep 27, 2026
 
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