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

81°F

27°C

Humidity 82%
Wind Speed Calm
Barometer 29.86 in (1008.1 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 22 Jul 2:54 am ChST
Extended Forecast for

Santa Rosa GU

  • Overnight

    Overnight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 76. Southwest wind around 6 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers and thunderstorms after noon. Partly sunny, with a high near 87. South southwest wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 87 °F

    Partly Sunny
    then
    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 74. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 74 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers and thunderstorms after noon. Partly sunny, with a high near 86. Calm wind. Chance of precipitation is 30%.

    High: 86 °F

    Mostly Sunny
    then
    Scattered
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 76. Light north wind.

    Low: 76 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers, mainly after noon. Partly sunny, with a high near 87.

    High: 87 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 76.

    Low: 76 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 76.

    Low: 76 °F

    Partly Cloudy

Detailed Forecast

Overnight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 76. Southwest wind around 6 mph. Chance of precipitation is 30%.
Wednesday
Scattered showers and thunderstorms after noon. Partly sunny, with a high near 87. South southwest wind 6 to 8 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 74. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
Scattered showers and thunderstorms after noon. Partly sunny, with a high near 86. Calm wind. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 76. Light north wind.
Friday
A 30 percent chance of showers, mainly after noon. Partly sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 76.
Saturday
Partly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 76.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 77.
Monday
Mostly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 76.
Tuesday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Santa Rosa GU
 13.4°N 144.67°E
Last Update:
6:05 pm ChST Jul 21, 2026
Forecast Valid:
3am ChST Jul 22, 2026-6pm ChST Jul 28, 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