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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Mostly Cloudy

78°F

26°C

Humidity 90%
Wind Speed NE 8 mph
Barometer 29.79 in (1008.0 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 23 Mar 2:54 am ChST
Extended Forecast for

Agana Heights GU

  • Overnight

    Overnight: Scattered showers. Mostly cloudy, with a low around 73. East northeast wind around 10 mph. Chance of precipitation is 50%.

    Low: 73 °F

    Scattered
    Showers

  • Monday

    Monday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 86. East northeast wind 10 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 86 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Scattered showers. Mostly cloudy, with a low around 73. East northeast wind 8 to 14 mph. Chance of precipitation is 50%.

    Low: 73 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers and thunderstorms. Partly sunny, with a high near 86. East northeast wind 8 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

    High: 86 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers. Mostly cloudy, with a low around 74. East northeast wind 7 to 10 mph. Chance of precipitation is 40%.

    Low: 74 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers. Partly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 75.

    Low: 75 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 75.

    Low: 75 °F

    Chance
    Showers

Detailed Forecast

Overnight
Scattered showers. Mostly cloudy, with a low around 73. East northeast wind around 10 mph. Chance of precipitation is 50%.
Monday
Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 86. East northeast wind 10 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Monday Night
Scattered showers. Mostly cloudy, with a low around 73. East northeast wind 8 to 14 mph. Chance of precipitation is 50%.
Tuesday
Scattered showers and thunderstorms. Partly sunny, with a high near 86. East northeast wind 8 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 74. East northeast wind 7 to 10 mph. Chance of precipitation is 40%.
Wednesday
Scattered showers. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 75.
Thursday
Partly sunny, with a high near 88.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 75.
Friday
Partly sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 76.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 76.
Sunday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Agana Heights GU
 13.47°N 144.74°E
Last Update:
6:06 pm ChST Mar 22, 2026
Forecast Valid:
3am ChST Mar 23, 2026-6pm ChST Mar 29, 2026
 
Forecast Discussion
 
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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