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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Fair

82°F

28°C

Humidity 74%
Wind Speed E 8 mph
Barometer 29.80 in (1008.3 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 25 Dec 5:54 pm ChST
Extended Forecast for

Santa Rita GU

High Surf Advisory December 26, 04:00am until December 28, 04:00pm
Click here for hazard details and duration
High Surf Advisory

  • Tonight

    Tonight: Isolated showers. Mostly cloudy, with a low around 78. East wind 8 to 13 mph.

    Low: 78 °F

    Isolated
    Showers

  • Friday

    Friday: Isolated showers. Mostly sunny, with a high near 85. East wind 8 to 11 mph.

    High: 85 °F

    Isolated
    Showers

  • Friday Night

    Friday Night: Isolated showers. Partly cloudy, with a low around 78. East wind 5 to 8 mph.

    Low: 78 °F

    Isolated
    Showers

  • Saturday

    Saturday: Isolated showers. Mostly sunny, with a high near 86. East wind 5 to 8 mph.

    High: 86 °F

    Isolated
    Showers

  • Saturday Night

    Saturday Night: Isolated showers. Partly cloudy, with a low around 78. East wind 7 to 9 mph.

    Low: 78 °F

    Isolated
    Showers

  • Sunday

    Sunday: Isolated showers. Mostly sunny, with a high near 88.

    High: 88 °F

    Isolated
    Showers

  • Sunday Night

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

    Low: 78 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Monday Night

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

    Low: 78 °F

    Partly Cloudy

Detailed Forecast

Tonight
Isolated showers. Mostly cloudy, with a low around 78. East wind 8 to 13 mph.
Friday
Isolated showers. Mostly sunny, with a high near 85. East wind 8 to 11 mph.
Friday Night
Isolated showers. Partly cloudy, with a low around 78. East wind 5 to 8 mph.
Saturday
Isolated showers. Mostly sunny, with a high near 86. East wind 5 to 8 mph.
Saturday Night
Isolated showers. Partly cloudy, with a low around 78. East wind 7 to 9 mph.
Sunday
Isolated showers. Mostly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 78.
Monday
Mostly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 78.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 78.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 78.
New Year's Day
Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Santa Rita GU
 13.38°N 144.67°E
Last Update:
6:05 pm ChST Dec 25, 2025
Forecast Valid:
6pm ChST Dec 25, 2025-6pm ChST Jan 1, 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