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

Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

A Few Clouds

86°F

30°C

Humidity 72%
Wind Speed E 16 mph
Barometer 29.81 in (1008.6 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 19 May 4:54 pm ChST
Extended Forecast for

Tamuning GU

  • Tonight

    Tonight: Isolated showers. Partly cloudy, with a low around 76. East wind 11 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Isolated showers. Mostly sunny, with a high near 88. East northeast wind 13 to 17 mph, with gusts as high as 22 mph.

    High: 88 °F

    Isolated
    Showers

  • Wednesday Night

    Wednesday Night: Isolated showers. Partly cloudy, with a low around 78. East northeast wind 11 to 16 mph, with gusts as high as 21 mph.

    Low: 78 °F

    Isolated
    Showers

  • Thursday

    Thursday: Isolated showers. Mostly sunny, with a high near 88. East wind 14 to 17 mph, with gusts as high as 22 mph.

    High: 88 °F

    Isolated
    Showers

  • Thursday Night

    Thursday Night: Scattered showers. Mostly cloudy, with a low around 77. East wind 10 to 14 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Scattered
    Showers

  • Friday

    Friday: Scattered showers. Partly sunny, with a high near 88. Chance of precipitation is 30%.

    High: 88 °F

    Scattered
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 77.

    Low: 77 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers. Partly sunny, with a high near 87.

    High: 87 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 77.

    Low: 77 °F

    Chance
    Showers

Detailed Forecast

Tonight
Isolated showers. Partly cloudy, with a low around 76. East wind 11 to 15 mph, with gusts as high as 20 mph.
Wednesday
Isolated showers. Mostly sunny, with a high near 88. East northeast wind 13 to 17 mph, with gusts as high as 22 mph.
Wednesday Night
Isolated showers. Partly cloudy, with a low around 78. East northeast wind 11 to 16 mph, with gusts as high as 21 mph.
Thursday
Isolated showers. Mostly sunny, with a high near 88. East wind 14 to 17 mph, with gusts as high as 22 mph.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 77. East wind 10 to 14 mph. Chance of precipitation is 30%.
Friday
Scattered showers. Partly sunny, with a high near 88. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 77.
Saturday
A chance of showers. Partly sunny, with a high near 87.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 77.
Sunday
A chance of showers. Partly sunny, with a high near 86.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 81.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 84.
Monday Night
A chance of showers. Mostly cloudy, with a low around 81.
Tuesday
A chance of showers. Mostly cloudy, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tamuning GU
 13.49°N 144.79°E
Last Update:
3:42 pm ChST May 19, 2026
Forecast Valid:
5pm ChST May 19, 2026-6pm ChST May 26, 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