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

Dangerous Heat Wave for the West; Severe Storms and Heavy Rain for Upper Midwest

A sweltering and long duration heat wave will build across the West this weekend through much of next week. Excessive heat warnings/watches along with heat advisories are in effect from the Southwest to the Northwest. Dangerous heat is also persisting across the southern Plains. Meanwhile, severe storms are likely in the Upper Midwest with heavy rain/flooding, damaging winds, hail, and tornadoes. Read More >

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Fair

79°F

26°C

Humidity 84%
Wind Speed Calm
Barometer 29.82 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 15 Aug 1:54 am ChST
Extended Forecast for

Tiyan GU

  • Overnight

    Overnight: Isolated showers. Partly cloudy, with a low around 79. Light northeast wind.

    Isolated
    Showers

    Low: 79 °F

  • Saturday

    Saturday: Scattered showers and thunderstorms after 11am. Partly sunny, with a high near 88. Heat index values as high as 97. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.

    Scattered
    Showers

    High: 88 °F

  • Saturday
    Night

    Saturday Night: Isolated showers. Partly cloudy, with a low around 79. East wind 3 to 5 mph.

    Isolated
    Showers

    Low: 79 °F

  • Sunday

    Sunday: Scattered showers and thunderstorms between 10am and 4pm. Partly sunny, with a high near 88. Heat index values as high as 97. Calm wind becoming east southeast 5 to 8 mph in the morning. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.

    Scattered
    Showers

    High: 88 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 79. East southeast wind 5 to 7 mph becoming calm in the evening.

    Partly Cloudy

    Low: 79 °F

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 87. New rainfall amounts between a quarter and half of an inch possible.

    Mostly Sunny
    then Chance
    T-storms

    High: 87 °F

  • Monday
    Night

    Monday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 76.

    Chance
    Showers

    Low: 76 °F

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 10am. Partly sunny, with a high near 89.

    Chance
    T-storms

    High: 89 °F

  • Tuesday
    Night

    Tuesday Night: Mostly cloudy, with a low around 77.

    Mostly Cloudy

    Low: 77 °F

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 79. Light northeast wind.
Saturday
Scattered showers and thunderstorms after 11am. Partly sunny, with a high near 88. Heat index values as high as 97. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Isolated showers. Partly cloudy, with a low around 79. East wind 3 to 5 mph.
Sunday
Scattered showers and thunderstorms between 10am and 4pm. Partly sunny, with a high near 88. Heat index values as high as 97. Calm wind becoming east southeast 5 to 8 mph in the morning. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Partly cloudy, with a low around 79. East southeast wind 5 to 7 mph becoming calm in the evening.
Monday
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 87. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 76.
Tuesday
A 30 percent chance of showers and thunderstorms after 10am. Partly sunny, with a high near 89.
Tuesday Night
Mostly cloudy, with a low around 77.
Wednesday
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 89.
Wednesday Night
Isolated showers. Partly cloudy, with a low around 77.
Thursday
Isolated showers. Mostly sunny, with a high near 90.
Thursday Night
Isolated showers. Partly cloudy, with a low around 77.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Tiyan GU
 13.49°N 144.79°E (Elev. 3 ft)
Last Update:
4:41 pm ChST Aug 14, 2020
Forecast Valid:
2am ChST Aug 15, 2020-6pm ChST Aug 21, 2020
 
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Additional Resources

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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