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.

Mostly Cloudy

79°F

26°C

Humidity 90%
Wind Speed E 9 mph
Barometer 29.83 in (1009.4 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 18 Jun 10:54 pm ChST
Extended Forecast for

Santa Rosa GU

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 77. Southeast wind around 7 mph. Chance of precipitation is 70%.

    Low: 77 °F

    Heavy Rain

  • Juneteenth

    Juneteenth: Showers likely and possibly a thunderstorm before noon, then scattered showers and thunderstorms after noon. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 87. South southeast wind 7 to 13 mph. Chance of precipitation is 70%.

    High: 87 °F

    Heavy Rain
    then
    Scattered
    Showers

  • Friday Night

    Friday Night: Scattered showers. Mostly cloudy, with a low around 77. South southeast wind 7 to 11 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Scattered
    Showers

  • Saturday

    Saturday: Isolated showers. Mostly sunny, with a high near 89. South southeast wind 7 to 9 mph.

    High: 89 °F

    Isolated
    Showers

  • Saturday Night

    Saturday Night: Isolated showers. Partly cloudy, with a low around 77. South southeast wind 3 to 6 mph.

    Low: 77 °F

    Isolated
    Showers

  • Sunday

    Sunday: A chance of showers after noon. Mostly sunny, with a high near 89. Chance of precipitation is 30%.

    High: 89 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers after noon. Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 77. Southeast wind around 7 mph. Chance of precipitation is 70%.
Juneteenth
Showers likely and possibly a thunderstorm before noon, then scattered showers and thunderstorms after noon. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 87. South southeast wind 7 to 13 mph. Chance of precipitation is 70%.
Friday Night
Scattered showers. Mostly cloudy, with a low around 77. South southeast wind 7 to 11 mph. Chance of precipitation is 30%.
Saturday
Isolated showers. Mostly sunny, with a high near 89. South southeast wind 7 to 9 mph.
Saturday Night
Isolated showers. Partly cloudy, with a low around 77. South southeast wind 3 to 6 mph.
Sunday
A chance of showers after noon. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 77.
Monday
A chance of showers after noon. Mostly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 77.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 77.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 77.
Thursday
Partly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Santa Rosa GU
 13.4°N 144.67°E
Last Update:
6:05 pm ChST Jun 18, 2026
Forecast Valid:
11pm ChST Jun 18, 2026-6pm ChST Jun 25, 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