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

77°F

25°C

Humidity 88%
Wind Speed SW 5 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 21 Aug 10:53 pm HST
Extended Forecast for

3 Miles WSW 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 69. Calm wind becoming east northeast around 6 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 69 °F

    Scattered
    Showers

  • Saturday

    Saturday: Showers likely, mainly after noon. Partly sunny, with a high near 80. Light and variable wind becoming east northeast around 6 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

  • Saturday Night

    Saturday Night: Occasional showers. The rain could be heavy at times. Low around 70. North northeast wind 5 to 7 mph becoming southwest after midnight. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 70 °F

    Heavy Rain

  • Sunday

    Sunday: Showers. The rain could be heavy at times. High near 77. Southwest wind 5 to 11 mph becoming east northeast in the morning. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    High: 77 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers. The rain could be heavy at times. Low around 71. South southeast wind 3 to 5 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    Low: 71 °F

    Heavy Rain

  • Monday

    Monday: Showers. The rain could be heavy at times. High near 77. East wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 77 °F

    Heavy Rain

  • Monday Night

    Monday Night: Showers likely. Mostly cloudy, with a low around 70. East wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, mainly before noon. Partly sunny, with a high near 76. East northeast wind around 6 mph. Chance of precipitation is 60%.

    High: 76 °F

    Showers
    Likely then
    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers. Mostly cloudy, with a low around 68. North wind around 6 mph. Chance of precipitation is 50%.

    Low: 68 °F

    Scattered
    Showers

Detailed Forecast

Tonight
Scattered showers. Mostly cloudy, with a low around 69. Calm wind becoming east northeast around 6 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Showers likely, mainly after noon. Partly sunny, with a high near 80. Light and variable wind becoming east northeast around 6 mph in the morning. Chance of precipitation is 60%. 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 70. North northeast wind 5 to 7 mph becoming southwest after midnight. 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 77. Southwest wind 5 to 11 mph becoming east northeast in the morning. 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 71. South southeast wind 3 to 5 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 77. East wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Monday Night
Showers likely. Mostly cloudy, with a low around 70. East wind around 5 mph becoming calm. Chance of precipitation is 60%.
Tuesday
Showers likely, mainly before noon. Partly sunny, with a high near 76. East northeast wind around 6 mph. Chance of precipitation is 60%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 68. North wind around 6 mph. Chance of precipitation is 50%.
Wednesday
Scattered showers, mainly before noon. Mostly cloudy, with a high near 76. Northeast wind around 5 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 67. Northeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 50%.
Thursday
Scattered showers. Partly sunny, with a high near 76. Light and variable wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 30%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 67. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Friday
Scattered showers. Partly sunny, with a high near 76. Calm wind becoming northeast around 5 mph. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Hilo HI
 19.68°N 155.14°W (Elev. 1129 ft)
Last Update:
6:55 pm HST Aug 21, 2026
Forecast Valid:
11pm 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