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

Tropical Storm Isaias to Impact the Eastern U.S. Early This Week

Tropical Storm Isaias will deliver heavy rainfall, flash and urban flooding, high winds, dangerous storm surge, coastal flooding, life-threatening surf, rip currents, and severe thunderstorms with tornadoes to portions of the Eastern U.S. through early this week. Isaias is expected to track from just offshore of northeastern Florida toward coastal South and North Carolina on Monday. 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 84%
Wind Speed E 12 mph
Barometer 29.86 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 3 Aug 10:54 pm ChST
Extended Forecast for

3 Miles S Agat GU

  • Tonight

    Tonight: Scattered showers and thunderstorms after midnight. Mostly cloudy, with a low around 80. East wind around 11 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Scattered
    Showers

    Low: 80 °F

  • Tuesday

    Tuesday: Scattered showers and thunderstorms before noon. Partly sunny, with a high near 89. Heat index values as high as 98. East wind 10 to 14 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Scattered
    Showers then
    Partly Sunny

    High: 89 °F

  • Tuesday
    Night

    Tuesday Night: Mostly cloudy, with a low around 79. East wind 7 to 13 mph.

    Mostly Cloudy
    then Isolated
    Showers

    Low: 79 °F

  • Wednesday

    Wednesday: Isolated showers. Mostly sunny, with a high near 90. Heat index values as high as 100. East wind 9 to 14 mph.

    Isolated
    Showers

    High: 90 °F

  • Wednesday
    Night

    Wednesday Night: Isolated showers. Partly cloudy, with a low around 79. East wind 6 to 14 mph.

    Isolated
    Showers

    Low: 79 °F

  • Thursday

    Thursday: Partly sunny, with a high near 89.

    Partly Sunny

    High: 89 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 79.

    Mostly Cloudy

    Low: 79 °F

  • Friday

    Friday: Partly sunny, with a high near 89.

    Partly Sunny

    High: 89 °F

  • Friday
    Night

    Friday Night: Mostly cloudy, with a low around 79.

    Mostly Cloudy

    Low: 79 °F

Detailed Forecast

Tonight
Scattered showers and thunderstorms after midnight. Mostly cloudy, with a low around 80. East wind around 11 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Scattered showers and thunderstorms before noon. Partly sunny, with a high near 89. Heat index values as high as 98. East wind 10 to 14 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Mostly cloudy, with a low around 79. East wind 7 to 13 mph.
Wednesday
Isolated showers. Mostly sunny, with a high near 90. Heat index values as high as 100. East wind 9 to 14 mph.
Wednesday Night
Isolated showers. Partly cloudy, with a low around 79. East wind 6 to 14 mph.
Thursday
Partly sunny, with a high near 89.
Thursday Night
Mostly cloudy, with a low around 79.
Friday
Partly sunny, with a high near 89.
Friday Night
Mostly cloudy, with a low around 79.
Saturday
Partly sunny, with a high near 89.
Saturday Night
Mostly cloudy, with a low around 79.
Sunday
Partly sunny, with a high near 89.
Sunday Night
Mostly cloudy, with a low around 79.
Monday
Partly sunny, with a high near 89.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
3 Miles S Agat GU
 13.33°N 144.67°E (Elev. 994 ft)
Last Update:
10:38 pm ChST Aug 3, 2020
Forecast Valid:
11pm ChST Aug 3, 2020-6pm ChST Aug 10, 2020
 
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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