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

Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Overcast

75°F

24°C

Humidity 88%
Wind Speed E 9 mph
Barometer 29.89 in (1011.5 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 19 Mar 11:54 pm ChST
Extended Forecast for

Tamuning GU

High Surf Advisory March 20, 12:53am until March 20, 04:00pm
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory March 20, 12:53am until March 20, 04:00pm

    NOW until 4:00pm Fri

    High Surf Advisory

  • Overnight

    Low: 73 °F

    Isolated
    Showers

  • Friday

    Friday: Isolated showers. Mostly sunny, with a high near 85. Northeast wind 11 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, with gusts as high as 18 mph.

    Low: 74 °F

    Isolated
    Showers

  • Saturday

    Saturday: Isolated showers. Mostly sunny, with a high near 86. East northeast wind 9 to 14 mph, with gusts as high as 18 mph.

    High: 86 °F

    Isolated
    Showers

  • Saturday Night

    Saturday Night: Isolated showers. Partly cloudy, with a low around 75. East northeast wind 10 to 14 mph, with gusts as high as 18 mph.

    Low: 75 °F

    Isolated
    Showers

  • Sunday

    Sunday: Isolated showers. Mostly sunny, with a high near 87.

    High: 87 °F

    Isolated
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 75.

    Low: 75 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 87.

    High: 87 °F

    Chance
    Showers

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 73. Northeast wind around 11 mph.
Friday
Isolated showers. Mostly sunny, with a high near 85. Northeast wind 11 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, with gusts as high as 18 mph.
Saturday
Isolated showers. Mostly sunny, with a high near 86. East northeast wind 9 to 14 mph, with gusts as high as 18 mph.
Saturday Night
Isolated showers. Partly cloudy, with a low around 75. East northeast wind 10 to 14 mph, with gusts as high as 18 mph.
Sunday
Isolated showers. Mostly sunny, with a high near 87.
Sunday Night
Mostly cloudy, with a low around 75.
Monday
A chance of showers. Mostly cloudy, with a high near 87.
Monday Night
Mostly cloudy, with a low around 74.
Tuesday
A chance of showers. Partly sunny, with a high near 87.
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.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 76.
Thursday
Partly sunny, with a high near 89.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tamuning GU
 13.49°N 144.79°E
Last Update:
6:06 pm ChST Mar 19, 2026
Forecast Valid:
12am ChST Mar 20, 2026-6pm ChST Mar 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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