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

80°F

27°C

Humidity 79%
Wind Speed E 3 mph
Barometer 30.00 in (1015.8 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 21 Aug 7:53 pm HST
Extended Forecast for

Hilo HI

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

  • Tonight

    Tonight: Scattered showers. Mostly cloudy, with a low around 72. Light and variable wind. Chance of precipitation is 40%.

    Low: 72 °F

    Scattered
    Showers

  • Saturday

    Saturday: Showers likely, mainly after noon. Partly sunny, with a high near 83. Calm wind becoming east northeast around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 83 °F

    Scattered
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Occasional showers. The rain could be heavy at times. Low around 72. Calm wind becoming east 5 to 8 mph in the evening. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 72 °F

    Heavy Rain

  • Sunday

    Sunday: Showers. The rain could be heavy at times. High near 80. East wind 3 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    High: 80 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers. The rain could be heavy at times. Low around 73. South southeast wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    Low: 73 °F

    Heavy Rain

  • Monday

    Monday: Showers. The rain could be heavy at times. High near 80. East wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 80 °F

    Heavy Rain

  • Monday Night

    Monday Night: Showers likely. Mostly cloudy, with a low around 73. East southeast wind 3 to 7 mph. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, mainly before noon. Partly sunny, with a high near 80. East northeast wind 5 to 7 mph. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely then
    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers. Mostly cloudy, with a low around 71. North northeast wind 5 to 7 mph. Chance of precipitation is 50%.

    Low: 71 °F

    Scattered
    Showers

Detailed Forecast

Tonight
Scattered showers. Mostly cloudy, with a low around 72. Light and variable wind. Chance of precipitation is 40%.
Saturday
Showers likely, mainly after noon. Partly sunny, with a high near 83. Calm wind becoming east northeast around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Occasional showers. The rain could be heavy at times. Low around 72. Calm wind becoming east 5 to 8 mph in the evening. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Sunday
Showers. The rain could be heavy at times. High near 80. East wind 3 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Sunday Night
Showers. The rain could be heavy at times. Low around 73. South southeast wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Monday
Showers. The rain could be heavy at times. High near 80. East wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
Showers likely. Mostly cloudy, with a low around 73. East southeast wind 3 to 7 mph. Chance of precipitation is 60%.
Tuesday
Showers likely, mainly before noon. Partly sunny, with a high near 80. East northeast wind 5 to 7 mph. Chance of precipitation is 60%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 71. North northeast wind 5 to 7 mph. Chance of precipitation is 50%.
Wednesday
Scattered showers, mainly before noon. Partly sunny, with a high near 80. Northeast wind around 6 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 71. Northeast wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 50%.
Thursday
Scattered showers. Partly sunny, with a high near 80. Light and variable wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 30%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 69. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.
Friday
Scattered showers. Partly sunny, with a high near 80. Northeast wind around 6 mph becoming calm in the afternoon. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hilo HI
 19.7°N 155.09°W (Elev. 217 ft)
Last Update:
6:55 pm HST Aug 21, 2026
Forecast Valid:
8pm HST Aug 21, 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