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

82°F

28°C

Humidity 67%
Wind Speed N 10 mph
Barometer 29.83 in (1009.9 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 21 Mar 12:53 pm HST
Extended Forecast for

Hilo International Airport HI

Flood Watch March 21, 01:01pm until March 22, 06:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch March 21, 01:01pm until March 22, 06:00pm

    NOW until 6:00pm Sun

    Flood Watch

  • This Afternoon

    High: 84 °F

    Heavy Rain

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly after 8pm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 70. North wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New rainfall amounts between three quarters and one inch possible.

    Low: 70 °F

    Heavy Rain

  • Sunday

    Sunday: Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 8am. Some of the storms could produce heavy rainfall. High near 80. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers likely. Cloudy, with a low around 68. North northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely. Cloudy, with a high near 77. Calm wind becoming north 5 to 8 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 77 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 67. North wind 3 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Showers
    Likely then
    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers. Partly sunny, with a high near 78. North northeast wind 8 to 13 mph. Chance of precipitation is 40%.

    High: 78 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers. Mostly cloudy, with a low around 66. North wind 7 to 10 mph. Chance of precipitation is 40%.

    Low: 66 °F

    Scattered
    Showers

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 84. North wind around 6 mph. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms, mainly after 8pm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 70. North wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New rainfall amounts between three quarters and one inch possible.
Sunday
Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 8am. Some of the storms could produce heavy rainfall. High near 80. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers likely. Cloudy, with a low around 68. North northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Showers likely. Cloudy, with a high near 77. Calm wind becoming north 5 to 8 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 67. North wind 3 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Scattered showers. Partly sunny, with a high near 78. North northeast wind 8 to 13 mph. Chance of precipitation is 40%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 66. North wind 7 to 10 mph. Chance of precipitation is 40%.
Wednesday
Scattered showers, mainly after noon. Partly sunny, with a high near 78. North northeast wind 8 to 11 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers, mainly before midnight. Mostly cloudy, with a low around 66. North wind 6 to 8 mph. Chance of precipitation is 30%.
Thursday
Isolated showers. Partly sunny, with a high near 79. North wind 6 to 11 mph. Chance of precipitation is 20%.
Thursday Night
Isolated showers. Mostly cloudy, with a low around 66. North wind 3 to 7 mph. Chance of precipitation is 20%.
Friday
Isolated showers. Partly sunny, with a high near 78. Northeast wind 3 to 7 mph. Chance of precipitation is 20%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hilo International Airport HI
 19.72°N 155.04°W (Elev. 39 ft)
Last Update:
6:02 am HST Mar 21, 2026
Forecast Valid:
1pm HST Mar 21, 2026-6pm HST Mar 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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