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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.

Partly Cloudy and Breezy

87°F

31°C

Humidity 70%
Wind Speed E 21 mph
Barometer 29.86 in (1010.3 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 19 May 12:54 pm ChST
Extended Forecast for

Santa Rosa GU

  • This Afternoon

    This Afternoon: Isolated showers. Mostly sunny, with a high near 87. East wind around 16 mph, with gusts as high as 21 mph.

    High: 87 °F

    Isolated
    Showers

  • Tonight

    Tonight: Isolated showers. Partly cloudy, with a low around 77. East wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Isolated showers. Mostly sunny, with a high near 87. East northeast wind 13 to 17 mph, with gusts as high as 23 mph.

    High: 87 °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. Partly sunny, with a high near 86. East northeast wind 13 to 16 mph, with gusts as high as 21 mph.

    High: 86 °F

    Isolated
    Showers

  • Thursday Night

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

    Low: 78 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 78.

    Low: 78 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers. Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Isolated showers. Mostly sunny, with a high near 87. East wind around 16 mph, with gusts as high as 21 mph.
Tonight
Isolated showers. Partly cloudy, with a low around 77. East wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Isolated showers. Mostly sunny, with a high near 87. East northeast wind 13 to 17 mph, with gusts as high as 23 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. Partly sunny, with a high near 86. East northeast wind 13 to 16 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 78.
Friday
Partly sunny, with a high near 87.
Friday Night
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 86.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 81.
Memorial Day
A chance of showers. Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Santa Rosa GU
 13.4°N 144.67°E
Last Update:
6:06 am ChST May 19, 2026
Forecast Valid:
2pm ChST May 19, 2026-6pm ChST May 25, 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