Severe Thunderstorms for the Center of the Nation; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

A round of severe thunderstorms are forecast across areas of the Southern Plains, Mississippi Valley and Great Lakes this afternoon and tonight; The threat for flash flooding will also accompany these storms. The rainfall for the Great Lakes region could prolong the ongoing flooding. Where the rain is needed, the Southern High Plains, critical fire weather concerns through today. Read More >

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Fair

80°F

27°C

Humidity 82%
Wind Speed S 3 mph
Barometer 29.82 in (1008.9 mb)
Dewpoint 74°F (23°C)
Visibility 9.00 mi
Heat Index85°F (29°C)
Last update 18 Apr 7:54 pm ChST
Extended Forecast for

Dededo GU

High Surf Advisory April 18, 08:02pm until April 20, 05:00am
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory April 18, 08:02pm until April 20, 05:00am

    NOW until 5:00am Mon

    High Surf Advisory

  • Tonight

    Low: 77 °F

    Isolated
    Showers

  • Sunday

    Sunday: Scattered showers, mainly after noon.  Partly sunny, with a high near 87. Calm wind becoming south southwest around 5 mph.  Chance of precipitation is 30%.

    High: 87 °F

    Scattered
    Showers

  • Sunday Night

    Sunday Night: Isolated showers.  Partly cloudy, with a low around 76. Calm wind.

    Low: 76 °F

    Isolated
    Showers

  • Monday

    Monday: Isolated showers.  Mostly sunny, with a high near 87. Light and variable wind.

    High: 87 °F

    Isolated
    Showers

  • Monday Night

    Monday Night: Isolated showers.  Partly cloudy, with a low around 77. Northeast wind around 5 mph.

    Low: 77 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Isolated showers.  Mostly sunny, with a high near 88.

    High: 88 °F

    Isolated
    Showers

  • Tuesday Night

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

    Low: 76 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Tonight
Isolated showers. Partly cloudy, with a low around 77. West southwest wind 5 to 7 mph becoming calm after midnight.
Sunday
Scattered showers, mainly after noon. Partly sunny, with a high near 87. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 30%.
Sunday Night
Isolated showers. Partly cloudy, with a low around 76. Calm wind.
Monday
Isolated showers. Mostly sunny, with a high near 87. Light and variable wind.
Monday Night
Isolated showers. Partly cloudy, with a low around 77. Northeast wind around 5 mph.
Tuesday
Isolated showers. Mostly sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 76.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 76.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 76.
Friday
Mostly sunny, with a high near 88.
Friday Night
Partly cloudy, with a low around 76.
Saturday
Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Dededo GU
 13.52°N 144.83°E
6:07 pm ChST Apr 18, 2026
8pm ChST Apr 18, 2026-6pm ChST Apr 25, 2026
 
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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