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 >

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48° N Lon: 144.8° E Elev: 304 ft.

Partly Cloudy

80°F

27°C

Humidity 79%
Wind Speed E 12 mph
Barometer 29.83 in (1009.3 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 25 Dec 7:54 am ChST
Detailed forecast for

Guam

Today
Partly sunny with isolated showers. East winds 15 to 20 mph. Highs near 86. Chance of showers 20 percent.
Tonight
Partly cloudy with isolated showers. East winds 10 to 15 mph. Lows around 78. Chance of showers 20 percent.
Friday
Mostly sunny with isolated showers. East winds 10 to 15 mph. Highs near 86. Chance of showers 10 percent.
Friday Night And Saturday
Partly cloudy. Isolated showers. East winds 10 to 15 mph. Lows around 78. Highs near 87. Chance of showers 20 percent.
Saturday Night Through Wednesday
Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s.



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359 AM ChST Thu Dec 25 2025
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database