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

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Fair

75°F

24°C

Humidity 69%
Wind Speed NE 10 mph
Barometer 29.90 in (1011.6 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 19 Mar 1:54 am ChST
Extended Forecast for

Agana Heights GU

High Surf Advisory March 19, 02:23am until March 20, 04:00pm
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory March 19, 02:23am until March 20, 04:00pm

    NOW until 4:00pm Fri

    High Surf Advisory

  • Overnight

    Low: 74 °F

    Isolated
    Showers

  • Thursday

    Thursday: Isolated showers. Partly sunny, with a high near 85. Northeast wind 9 to 16 mph, with gusts as high as 21 mph.

    High: 85 °F

    Isolated
    Showers

  • Thursday Night

    Thursday Night: Isolated showers. Partly cloudy, with a low around 74. Northeast wind 9 to 13 mph.

    Low: 74 °F

    Isolated
    Showers

  • Friday

    Friday: Isolated showers. Mostly sunny, with a high near 85. East northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 85 °F

    Isolated
    Showers

  • Friday Night

    Friday Night: Isolated showers. Partly cloudy, with a low around 74. East northeast wind 8 to 14 mph.

    Low: 74 °F

    Isolated
    Showers

  • Saturday

    Saturday: Isolated showers. Mostly sunny, with a high near 85.

    High: 85 °F

    Isolated
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 74. Northeast wind around 10 mph.
Thursday
Isolated showers. Partly sunny, with a high near 85. Northeast wind 9 to 16 mph, with gusts as high as 21 mph.
Thursday Night
Isolated showers. Partly cloudy, with a low around 74. Northeast wind 9 to 13 mph.
Friday
Isolated showers. Mostly sunny, with a high near 85. East northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
Isolated showers. Partly cloudy, with a low around 74. East northeast wind 8 to 14 mph.
Saturday
Isolated showers. Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 75.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
Mostly cloudy, with a low around 75.
Monday
A chance of showers. Partly sunny, with a high near 87.
Monday Night
A chance of showers. Mostly cloudy, with a low around 74.
Tuesday
A chance of showers. Mostly cloudy, with a high near 86.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 76.
Wednesday
A chance of showers. Partly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Agana Heights GU
 13.47°N 144.74°E
Last Update:
6:06 pm ChST Mar 18, 2026
Forecast Valid:
2am ChST Mar 19, 2026-6pm ChST Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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