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.

Fair

74°F

23°C

Humidity 82%
Wind Speed NE 8 mph
Barometer 29.89 in (1011.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 20 Mar 6:54 am ChST
Extended Forecast for

Santa Rosa GU

High Surf Advisory March 20, 07:06am until March 20, 04:00pm
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory March 20, 07:06am until March 20, 04:00pm

    NOW until 4:00pm Fri

    High Surf Advisory

  • Today

    High: 83 °F

    Isolated
    Showers

  • Tonight

    Tonight: Isolated showers. Partly cloudy, with a low around 74. Northeast wind 11 to 16 mph, with gusts as high as 21 mph.

    Low: 74 °F

    Isolated
    Showers

  • Saturday

    Saturday: Isolated showers. Mostly sunny, with a high near 85. East northeast wind 13 to 18 mph, with gusts as high as 25 mph.

    High: 85 °F

    Isolated
    Showers

  • Saturday Night

    Saturday Night: Isolated showers. Partly cloudy, with a low around 75. East northeast wind 11 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Isolated
    Showers

  • Sunday

    Sunday: Isolated showers. Mostly sunny, with a high near 86. Northeast wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 86 °F

    Isolated
    Showers

  • Sunday Night

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

    Low: 75 °F

    Mostly Cloudy

  • Monday

    Monday: A 40 percent chance of showers. Mostly cloudy, with a high near 86.

    High: 86 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 74.

    Low: 74 °F

    Mostly Cloudy

Detailed Forecast

Today
Isolated showers. Mostly sunny, with a high near 83. Northeast wind 14 to 18 mph, with gusts as high as 24 mph.
Tonight
Isolated showers. Partly cloudy, with a low around 74. Northeast wind 11 to 16 mph, with gusts as high as 21 mph.
Saturday
Isolated showers. Mostly sunny, with a high near 85. East northeast wind 13 to 18 mph, with gusts as high as 25 mph.
Saturday Night
Isolated showers. Partly cloudy, with a low around 75. East northeast wind 11 to 15 mph, with gusts as high as 20 mph.
Sunday
Isolated showers. Mostly sunny, with a high near 86. Northeast wind 15 to 20 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 75.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 86.
Monday Night
Mostly cloudy, with a low around 74.
Tuesday
A chance of showers. Partly sunny, 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 86.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 77.
Thursday
Partly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Santa Rosa GU
 13.4°N 144.67°E
Last Update:
6:05 am ChST Mar 20, 2026
Forecast Valid:
7am ChST Mar 20, 2026-6pm ChST Mar 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