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.

Fair

85°F

29°C

Humidity 55%
Wind Speed S 15 G 29 mph
Barometer 29.84 in (1010.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 20 Mar 10:53 am HST
Extended Forecast for

Hilo International Airport HI

Flood Watch March 20, 11:02am until March 22, 06:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch March 20, 11:02am until March 22, 06:00pm

    NOW until 6:00pm Sun

    Flood Watch

  • Today

    High: 81 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Isolated showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 70. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 70 °F

    Heavy Rain

  • Saturday

    Saturday: Isolated showers and thunderstorms. Some of the storms could produce heavy rainfall. Cloudy, with a high near 82. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 82 °F

    Heavy Rain

  • Saturday Night

    Saturday Night: Scattered showers and thunderstorms, mainly after 8pm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 69. Northeast wind 5 to 7 mph becoming southwest in the evening. Chance of precipitation is 30%. New rainfall amounts between 1 and 2 inches possible.

    Low: 69 °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 78. South southwest wind 5 to 7 mph becoming north northeast in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers likely. Cloudy, with a low around 67. North northeast wind around 5 mph becoming west northwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely. Cloudy, with a high near 76. West northwest wind 5 to 8 mph becoming north northeast in the morning. Chance of precipitation is 70%.

    High: 76 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely, mainly before 8pm. Cloudy, with a low around 66. North wind around 8 mph. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely then
    Scattered
    Showers

Detailed Forecast

Today
Isolated showers and thunderstorms. Mostly cloudy, with a high near 81. Southeast wind 9 to 14 mph becoming light east southeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Tonight
Isolated showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 70. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
Isolated showers and thunderstorms. Some of the storms could produce heavy rainfall. Cloudy, with a high near 82. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
Scattered showers and thunderstorms, mainly after 8pm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 69. Northeast wind 5 to 7 mph becoming southwest in the evening. Chance of precipitation is 30%. New rainfall amounts between 1 and 2 inches possible.
Sunday
Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 8am. Some of the storms could produce heavy rainfall. High near 78. South southwest wind 5 to 7 mph becoming north northeast 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 67. North northeast wind around 5 mph becoming west northwest after midnight. 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 76. West northwest wind 5 to 8 mph becoming north northeast in the morning. Chance of precipitation is 70%.
Monday Night
Showers likely, mainly before 8pm. Cloudy, with a low around 66. North wind around 8 mph. Chance of precipitation is 70%.
Tuesday
Scattered showers, mainly after 8am. Mostly cloudy, with a high near 76. North northeast wind 7 to 10 mph. Chance of precipitation is 40%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 65. North wind 6 to 9 mph. Chance of precipitation is 40%.
Wednesday
Scattered showers. Partly sunny, with a high near 77. Northwest wind around 6 mph becoming calm in the afternoon. Chance of precipitation is 30%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%.
Thursday
Isolated showers. Partly sunny, with a high near 77. Calm wind becoming east 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hilo International Airport HI
 19.72°N 155.09°W (Elev. 95 ft)
Last Update:
6:01 am HST Mar 20, 2026
Forecast Valid:
11am HST Mar 20, 2026-6pm HST Mar 26, 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