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.

Mostly Cloudy

79°F

26°C

Humidity 74%
Wind Speed E 12 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 15 May 2:53 pm HST
Extended Forecast for

4 Miles SW Wainaku HI

Flood Watch May 15, 03:51pm until May 16, 06:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch May 15, 03:51pm until May 16, 06:00am

    NOW until 6:00am Sat

    Flood Watch

  • This Afternoon

    High: 76 °F

    Scattered
    Showers

  • Tonight

    Tonight: Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 66. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 66 °F

    Heavy Rain

  • Saturday

    Saturday: Occasional showers. High near 78. Calm wind becoming east southeast 5 to 8 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 78 °F

    Showers

  • Saturday Night

    Saturday Night: Occasional showers. Low around 67. South southeast wind 5 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Showers

  • Sunday

    Sunday: Showers likely, mainly before noon. Mostly cloudy, with a high near 78. East wind 5 to 7 mph becoming calm in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 78 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Occasional showers. Low around 67. Light east wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 67 °F

    Showers

  • Monday

    Monday: Showers likely, mainly before noon. Mostly cloudy, with a high near 77. East wind 3 to 7 mph. Chance of precipitation is 60%.

    High: 77 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely. Mostly cloudy, with a low around 66. East northeast wind 3 to 6 mph. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Scattered showers. Mostly cloudy, with a high near 76. East southeast wind around 5 mph becoming calm. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Occasional showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 66. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
Occasional showers. High near 78. Calm wind becoming east southeast 5 to 8 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Occasional showers. Low around 67. South southeast wind 5 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Showers likely, mainly before noon. Mostly cloudy, with a high near 78. East wind 5 to 7 mph becoming calm in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Occasional showers. Low around 67. Light east wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers likely, mainly before noon. Mostly cloudy, with a high near 77. East wind 3 to 7 mph. Chance of precipitation is 60%.
Monday Night
Showers likely. Mostly cloudy, with a low around 66. East northeast wind 3 to 6 mph. Chance of precipitation is 70%.
Tuesday
Scattered showers. Partly sunny, with a high near 76. Northeast wind 6 to 8 mph. Chance of precipitation is 50%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 66. Northeast wind 5 to 7 mph. Chance of precipitation is 60%.
Wednesday
Showers likely. Mostly cloudy, with a high near 76. East northeast wind 5 to 8 mph. Chance of precipitation is 60%.
Wednesday Night
Occasional showers. Low around 65. Northeast wind 5 to 7 mph. Chance of precipitation is 80%.
Thursday
Scattered showers. Mostly cloudy, with a high near 75. Northeast wind 6 to 9 mph. Chance of precipitation is 50%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 65. Northeast wind around 8 mph. Chance of precipitation is 60%.
Friday
Scattered showers. Mostly cloudy, with a high near 74. Northeast wind 7 to 9 mph. Chance of precipitation is 50%.
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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:
3:28 pm HST May 15, 2026
Forecast Valid:
3pm HST May 15, 2026-6pm HST May 22, 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