National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Overcast and Breezy

80°F

27°C

Humidity 90%
Wind Speed SE 22 G 45 mph
Barometer 29.62 in (1002.1 mb)
Dewpoint 77°F (25°C)
Visibility 9.00 mi
Heat Index86°F (30°C)
Last update 18 Oct 3:54 pm ChST
Extended Forecast for

Sinajana GU

Typhoon Warning until further notice
Flood Watch October 18, 04:28pm until October 19, 04:00am
Coastal Flood Warning October 18, 04:28pm until October 19, 04:00am
High Surf Warning October 18, 04:28pm until October 19, 04:00am
Click here for hazard details and duration
Typhoon Warning until further notice
Flood Watch
Coastal Flood Warning
High Surf Warning
  •  
    Typhoon Warning until further notice
    Flood Watch October 18, 04:28pm until October 19, 04:00am
    Coastal Flood Warning October 18, 04:28pm until October 19, 04:00am
    High Surf Warning October 18, 04:28pm until October 19, 04:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 86 °F

    Scattered
    Showers and
    Windy

  • Tonight

    Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. Windy, with a south southeast wind 27 to 32 mph decreasing to 16 to 21 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 50%.

    Low: 78 °F

    Scattered
    Showers and
    Windy

  • Monday

    Monday: Scattered showers and thunderstorms. Mostly cloudy, with a high near 86. South wind 14 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    High: 86 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. South southeast wind 5 to 13 mph. Chance of precipitation is 30%.

    Low: 78 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Isolated showers. Mostly sunny, with a high near 86. East southeast wind 7 to 9 mph.

    High: 86 °F

    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Isolated showers. Partly cloudy, with a low around 78.

    Low: 78 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Isolated showers. Mostly sunny, with a high near 86.

    High: 86 °F

    Isolated
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 78.

    Low: 78 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Cloudy, with a high near 86. Windy, with a south southeast wind around 34 mph, with gusts as high as 44 mph. Chance of precipitation is 50%.
Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. Windy, with a south southeast wind 27 to 32 mph decreasing to 16 to 21 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 50%.
Monday
Scattered showers and thunderstorms. Mostly cloudy, with a high near 86. South wind 14 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Monday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. South southeast wind 5 to 13 mph. Chance of precipitation is 30%.
Tuesday
Isolated showers. Mostly sunny, with a high near 86. East southeast wind 7 to 9 mph.
Tuesday Night
Isolated showers. Partly cloudy, with a low around 78.
Wednesday
Isolated showers. Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 78.
Thursday
Mostly sunny, with a high near 86.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 78.
Friday
A chance of showers. Partly sunny, 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 88.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sinajana GU
 13.45°N 144.76°E
Last Update:
4:09 pm ChST Oct 18, 2026
Forecast Valid:
4pm ChST Oct 18, 2026-6pm ChST Oct 25, 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