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.

Fair

78°F

26°C

Humidity 97%
Wind Speed NE 3 mph
Barometer 29.76 in (1007.0 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 14 Sep 2:54 am ChST
Extended Forecast for

Santa Rosa GU

  • Overnight

    Overnight: Isolated showers. Partly cloudy, with a low around 78. Calm wind.

    Low: 78 °F

    Isolated
    Showers

  • Monday

    Monday: Scattered showers and thunderstorms after noon. Mostly sunny, with a high near 87. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 87 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Isolated showers. Partly cloudy, with a low around 77. North wind around 6 mph becoming calm in the evening.

    Low: 77 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly after noon. Partly sunny, with a high near 87. Light west northwest wind.

    High: 87 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 76. Calm wind. Chance of precipitation is 30%.

    Low: 76 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 77 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 79.

    Low: 79 °F

    Partly Cloudy

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 78. Calm wind.
Monday
Scattered showers and thunderstorms after noon. Mostly sunny, with a high near 87. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 30%.
Monday Night
Isolated showers. Partly cloudy, with a low around 77. North wind around 6 mph becoming calm in the evening.
Tuesday
A 30 percent chance of showers, mainly after noon. Partly sunny, with a high near 87. Light west northwest wind.
Tuesday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 76. Calm wind. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 77.
Thursday
Mostly sunny, with a high near 87.
Thursday Night
Partly cloudy, with a low around 79.
Friday
Mostly sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 79.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 79.
Sunday
Mostly sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Santa Rosa GU
 13.4°N 144.67°E
Last Update:
6:05 pm ChST Sep 13, 2026
Forecast Valid:
3am ChST Sep 14, 2026-6pm ChST Sep 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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