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

Hazardous Weather Conditions

Current conditions at

Hilo, Hilo International Airport (PHTO)

Lat: 19.72°NLon: 155.06°WElev: 36ft.

Overcast

75°F

24°C

Humidity 79%
Wind Speed SW 6 mph
Barometer 30.01 in (1016.1 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 22 Aug 6:53 am HST
Extended Forecast for

4 Miles SW Wainaku HI

Flood Watch August 23, 12:00am until August 24, 06:00pm
Click here for hazard details and duration
Flood Watch

  • Today

    Today: Showers likely, mainly after noon. Mostly cloudy, with a high near 80. Light and variable wind becoming northeast 5 to 7 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 80 °F

    Scattered
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: Occasional showers. The rain could be heavy at times. Low around 71. North wind around 6 mph becoming calm after midnight. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 71 °F

    Heavy Rain

  • Sunday

    Sunday: Occasional showers. The rain could be heavy at times. High near 77. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between 2 and 3 inches possible.

    High: 77 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Occasional showers. The rain could be heavy at times. Low around 72. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between 2 and 3 inches possible.

    Low: 72 °F

    Heavy Rain

  • Monday

    Monday: Occasional showers. The rain could be heavy at times. High near 78. East southeast wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

    High: 78 °F

    Heavy Rain

  • Monday Night

    Monday Night: Showers likely, mainly before midnight. The rain could be heavy at times. Cloudy, with a low around 72. East southeast wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 72 °F

    Heavy Rain

  • Tuesday

    Tuesday: Scattered showers, mainly before noon. Mostly cloudy, with a high near 77. East northeast wind 5 to 8 mph. Chance of precipitation is 50%.

    High: 77 °F

    Scattered
    Showers then
    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers. Mostly cloudy, with a low around 70. Northeast wind 7 to 9 mph. Chance of precipitation is 50%.

    Low: 70 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers, mainly before noon. Partly sunny, with a high near 77. Northeast wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 77 °F

    Scattered
    Showers

Detailed Forecast

Today
Showers likely, mainly after noon. Mostly cloudy, with a high near 80. Light and variable wind becoming northeast 5 to 7 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Occasional showers. The rain could be heavy at times. Low around 71. North wind around 6 mph becoming calm after midnight. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Sunday
Occasional showers. The rain could be heavy at times. High near 77. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between 2 and 3 inches possible.
Sunday Night
Occasional showers. The rain could be heavy at times. Low around 72. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between 2 and 3 inches possible.
Monday
Occasional showers. The rain could be heavy at times. High near 78. East southeast wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
Monday Night
Showers likely, mainly before midnight. The rain could be heavy at times. Cloudy, with a low around 72. East southeast wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Scattered showers, mainly before noon. Mostly cloudy, with a high near 77. East northeast wind 5 to 8 mph. Chance of precipitation is 50%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 70. Northeast wind 7 to 9 mph. Chance of precipitation is 50%.
Wednesday
Scattered showers, mainly before noon. Partly sunny, with a high near 77. Northeast wind 6 to 8 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 69. Northeast wind 3 to 6 mph. Chance of precipitation is 50%.
Thursday
Scattered showers. Partly sunny, with a high near 77. East northeast wind 3 to 7 mph. Chance of precipitation is 30%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 68. North wind around 6 mph. Chance of precipitation is 50%.
Friday
Scattered showers. Partly sunny, with a high near 76. Northeast wind 5 to 8 mph. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Wainaku HI
 19.7°N 155.14°W (Elev. 974 ft)
Last Update:
6:03 am HST Aug 22, 2026
Forecast Valid:
7am HST Aug 22, 2026-6pm HST Aug 28, 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