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

Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Light Rain and Windy

80°F

27°C

Humidity 87%
Wind Speed NW 33 G 49 mph
Barometer 29.35 in (993.2 mb)
Dewpoint 76°F (24°C)
Visibility 7.00 mi
Heat Index85°F (29°C)
Last update 14 Apr 1:54 am ChST
Extended Forecast for

Dededo GU

Typhoon Watch until further notice
Tropical Storm Warning until further notice
Flood Watch April 14, 02:28am until April 15, 10:00am
High Surf Warning April 14, 02:28am until April 16, 06:00pm
Coastal Flood Warning April 14, 02:28am until April 16, 05:00am
Click here for hazard details and duration
Typhoon Watch until further notice
Tropical Storm Warning until further notice
Flood Watch
High Surf Warning
Coastal Flood Warning
  •  
    Typhoon Watch until further notice
    Tropical Storm Warning until further notice
    Flood Watch April 14, 02:28am until April 15, 10:00am
    High Surf Warning April 14, 02:28am until April 16, 06:00pm
    Coastal Flood Warning April 14, 02:28am until April 16, 05:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 79 °F

    Scattered
    Showers and
    Windy

  • Tuesday

    Tuesday: Scattered showers and thunderstorms. Cloudy, with a high near 83. Windy, with a west northwest wind 40 to 46 mph, with gusts as high as 60 mph. Chance of precipitation is 50%.

    High: 83 °F

    Scattered
    Showers and
    Windy

  • Tuesday Night

    Tuesday Night: Scattered showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 9pm, then scattered showers and thunderstorms after 9pm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 79. Windy, with a west wind 39 to 46 mph, with gusts as high as 60 mph. Chance of precipitation is 70%.

    Low: 79 °F

    Heavy Rain
    and Windy

  • Wednesday

    Wednesday: Scattered showers and thunderstorms. Cloudy, with a high near 84. Windy, with a west southwest wind 32 to 39 mph, with gusts as high as 50 mph. Chance of precipitation is 40%.

    High: 84 °F

    Scattered
    Showers and
    Windy

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. Windy, with a southwest wind 23 to 32 mph, with gusts as high as 41 mph. Chance of precipitation is 30%.

    Low: 79 °F

    Scattered
    Showers and
    Windy

  • Thursday

    Thursday: Scattered showers and thunderstorms before 3pm. Partly sunny, with a high near 85. Windy. Chance of precipitation is 30%.

    High: 85 °F

    Scattered
    Showers and
    Windy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 77. Breezy.

    Low: 77 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 86. Breezy.

    High: 86 °F

    Partly Sunny
    and Breezy
    then Partly
    Sunny

Detailed Forecast

Overnight
Scattered showers and thunderstorms. Cloudy, with a low around 79. Windy, with a north northwest wind 37 to 39 mph, with gusts as high as 50 mph. Chance of precipitation is 50%.
Tuesday
Scattered showers and thunderstorms. Cloudy, with a high near 83. Windy, with a west northwest wind 40 to 46 mph, with gusts as high as 60 mph. Chance of precipitation is 50%.
Tuesday Night
Scattered showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 9pm, then scattered showers and thunderstorms after 9pm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 79. Windy, with a west wind 39 to 46 mph, with gusts as high as 60 mph. Chance of precipitation is 70%.
Wednesday
Scattered showers and thunderstorms. Cloudy, with a high near 84. Windy, with a west southwest wind 32 to 39 mph, with gusts as high as 50 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. Windy, with a southwest wind 23 to 32 mph, with gusts as high as 41 mph. Chance of precipitation is 30%.
Thursday
Scattered showers and thunderstorms before 3pm. Partly sunny, with a high near 85. Windy. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 77. Breezy.
Friday
Partly sunny, with a high near 86. Breezy.
Friday Night
Partly cloudy, with a low around 78.
Saturday
Mostly sunny, with a high near 88.
Saturday Night
Partly cloudy, with a low around 78.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 76.
Monday
Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dededo GU
 13.52°N 144.83°E
Last Update:
6:08 pm ChST Apr 13, 2026
Forecast Valid:
2am ChST Apr 14, 2026-6pm ChST Apr 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation