Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

A Few Clouds and Breezy

88°F

31°C

Humidity 66%
Wind Speed E 22 G 32 mph
Barometer 29.86 in (1010.3 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 20 May 1:54 pm ChST
Extended Forecast for

2 Miles SW Maina GU

  • This Afternoon

    This Afternoon: Isolated showers.  Mostly sunny, with a high near 86. East northeast wind around 17 mph, with gusts as high as 22 mph.

    High: 86 °F

    Isolated
    Showers

  • Tonight

    Tonight: Isolated showers.  Partly cloudy, with a low around 78. East northeast wind 11 to 16 mph, with gusts as high as 21 mph.

    Low: 78 °F

    Isolated
    Showers

  • Thursday

    Thursday: Scattered showers, mainly after noon.  Partly sunny, with a high near 86. East wind 14 to 16 mph, with gusts as high as 21 mph.  Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Scattered showers.  Mostly cloudy, with a low around 78. East wind 8 to 14 mph.  Chance of precipitation is 30%.

    Low: 78 °F

    Scattered
    Showers

  • Friday

    Friday: Isolated showers.  Mostly sunny, with a high near 86. East wind 9 to 14 mph, with gusts as high as 18 mph.

    High: 86 °F

    Isolated
    Showers

  • Friday Night

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

    Low: 78 °F

    Isolated
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers.  Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers.  Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Isolated showers. Mostly sunny, with a high near 86. East northeast wind around 17 mph, with gusts as high as 22 mph.
Tonight
Isolated showers. Partly cloudy, with a low around 78. East northeast wind 11 to 16 mph, with gusts as high as 21 mph.
Thursday
Scattered showers, mainly after noon. Partly sunny, with a high near 86. East wind 14 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 78. East wind 8 to 14 mph. Chance of precipitation is 30%.
Friday
Isolated showers. Mostly sunny, with a high near 86. East wind 9 to 14 mph, with gusts as high as 18 mph.
Friday Night
Isolated showers. Partly cloudy, with a low around 78.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 78.
Sunday
A chance of showers. Partly sunny, with a high near 85.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 78.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 84.
Monday Night
A chance of showers. Mostly cloudy, with a low around 78.
Tuesday
A chance of showers. Partly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Maina GU
 13.45°N 144.74°E
1:29 pm ChST May 20, 2026
2pm ChST May 20, 2026-6pm ChST May 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database