Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

A Few Clouds

81°F

27°C

Humidity 74%
Wind Speed E 13 mph
Barometer 29.85 in (1010.0 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 21 Mar 6:54 pm ChST
Extended Forecast for

Dededo GU

High Surf Advisory March 21, 07:20pm until March 22, 04:00pm
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory March 21, 07:20pm until March 22, 04:00pm

    NOW until 4:00pm Sun

    High Surf Advisory

  • Tonight

    Low: 73 °F

    Isolated
    Showers

  • Sunday

    Sunday: Isolated showers.  Mostly sunny, with a high near 85. East northeast wind 11 to 17 mph, with gusts as high as 23 mph.

    High: 85 °F

    Isolated
    Showers

  • Sunday Night

    Sunday Night: Isolated showers.  Partly cloudy, with a low around 73. East northeast wind 10 to 16 mph, with gusts as high as 21 mph.

    Low: 73 °F

    Isolated
    Showers

  • Monday

    Monday: Scattered showers and thunderstorms.  Partly sunny, with a high near 86. East northeast wind 11 to 18 mph, with gusts as high as 23 mph.  Chance of precipitation is 40%.

    High: 86 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers and thunderstorms.  Mostly cloudy, with a low around 73. East northeast wind 11 to 17 mph, with gusts as high as 22 mph.  Chance of precipitation is 30%.

    Low: 73 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers.  Partly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers.  Mostly cloudy, with a low around 74.

    Low: 74 °F

    Chance
    Showers

  • Wednesday

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

    High: 86 °F

    Chance
    Showers

Detailed Forecast

Tonight
Isolated showers. Partly cloudy, with a low around 73. East northeast wind 10 to 14 mph, with gusts as high as 18 mph.
Sunday
Isolated showers. Mostly sunny, with a high near 85. East northeast wind 11 to 17 mph, with gusts as high as 23 mph.
Sunday Night
Isolated showers. Partly cloudy, with a low around 73. East northeast wind 10 to 16 mph, with gusts as high as 21 mph.
Monday
Scattered showers and thunderstorms. Partly sunny, with a high near 86. East northeast wind 11 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Monday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 73. East northeast wind 11 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Tuesday
Scattered showers. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 74.
Wednesday
A chance of showers. Partly sunny, with a high near 86.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 75.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Mostly cloudy, with a low around 75.
Friday
Mostly sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 76.
Saturday
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Dededo GU
 13.52°N 144.83°E
6:05 pm ChST Mar 21, 2026
7pm ChST Mar 21, 2026-6pm ChST Mar 28, 2026
 
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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