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

Another Round of Heavy Rain and Mountain Snow in California; Snow in the Great Lakes and Northeast

Another round of heavy rainfall will renew concerns for additional flash flooding and landslides in southern California around burn scars and coastal mountain ranges. A low pressure system is bringing enhanced snowfall downwind from the lower Great Lakes into the Northeast mountain ranges. Above average temperatures will challenge or break daily record high temperatures across the southern Plains. 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 88%
Wind Speed E 12 mph
Barometer 29.82 in (1008.9 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 18 Nov 2:54 am ChST
Extended Forecast for

Sinajana GU

  • Overnight

    Overnight: Isolated showers. Partly cloudy, with a low around 78. East wind around 9 mph.

    Low: 78 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Isolated showers. Mostly sunny, with a high near 88. East wind 9 to 14 mph, with gusts as high as 18 mph.

    High: 88 °F

    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Isolated showers. Partly cloudy, with a low around 78. East northeast wind 9 to 14 mph, with gusts as high as 18 mph.

    Low: 78 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Isolated showers. Mostly sunny, with a high near 88. East wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 88 °F

    Isolated
    Showers

  • Wednesday Night

    Wednesday Night: Isolated showers. Partly cloudy, with a low around 78. East wind 13 to 18 mph, with gusts as high as 23 mph.

    Low: 78 °F

    Isolated
    Showers

  • Thursday

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

    High: 88 °F

    Isolated
    Showers

  • Thursday Night

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

    Low: 78 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Friday Night

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

    Low: 78 °F

    Partly Cloudy

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 78. East wind around 9 mph.
Tuesday
Isolated showers. Mostly sunny, with a high near 88. East wind 9 to 14 mph, with gusts as high as 18 mph.
Tuesday Night
Isolated showers. Partly cloudy, with a low around 78. East northeast wind 9 to 14 mph, with gusts as high as 18 mph.
Wednesday
Isolated showers. Mostly sunny, with a high near 88. East wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Isolated showers. Partly cloudy, with a low around 78. East wind 13 to 18 mph, with gusts as high as 23 mph.
Thursday
Isolated showers. Mostly sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 78.
Friday
Mostly sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 78.
Saturday
A chance of showers. Partly sunny, with a high near 87.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 79.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 77.
Monday
Mostly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sinajana GU
 13.47°N 144.76°E
Last Update:
6:05 pm ChST Nov 17, 2025
Forecast Valid:
3am ChST Nov 18, 2025-6pm ChST Nov 24, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation