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

86°F

30°C

Humidity 70%
Wind Speed E 10 mph
Barometer 29.99 in (1015.5 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 21 Aug 11:53 am HST
Extended Forecast for

4 Miles E Hilo International Airport HI

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

  • This Afternoon

    This Afternoon: Isolated showers. Mostly sunny, with a high near 85. East wind around 9 mph. Chance of precipitation is 20%.

    High: 85 °F

    Isolated
    Showers

  • Tonight

    Tonight: Scattered showers. Mostly cloudy, with a low around 74. East wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 74 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers. Partly sunny, with a high near 85. Calm wind becoming northeast around 6 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 85 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Occasional showers. The rain could be heavy at times. Low around 75. Calm wind becoming northeast 5 to 7 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 75 °F

    Heavy Rain

  • Sunday

    Sunday: Showers. The rain could be heavy at times. High near 83. Northeast wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    High: 83 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers. The rain could be heavy at times. Low around 75. Southeast wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 75 °F

    Heavy Rain

  • Monday

    Monday: Showers. The rain could be heavy at times. High near 83. Southeast wind 7 to 10 mph. Chance of precipitation is 100%.

    High: 83 °F

    Heavy Rain

  • Monday Night

    Monday Night: Showers. The rain could be heavy at times. Low around 74. East southeast wind 5 to 9 mph. Chance of precipitation is 80%.

    Low: 74 °F

    Heavy Rain

  • Tuesday

    Tuesday: Showers, mainly before noon. The rain could be heavy at times. High near 83. East northeast wind 6 to 10 mph. Chance of precipitation is 80%.

    High: 83 °F

    Heavy Rain
    then Isolated
    Showers

Detailed Forecast

This Afternoon
Isolated showers. Mostly sunny, with a high near 85. East wind around 9 mph. Chance of precipitation is 20%.
Tonight
Scattered showers. Mostly cloudy, with a low around 74. East wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 40%.
Saturday
Scattered showers. Partly sunny, with a high near 85. Calm wind becoming northeast around 6 mph. Chance of precipitation is 40%. 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 75. Calm wind becoming northeast 5 to 7 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Showers. The rain could be heavy at times. High near 83. Northeast wind around 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 75. Southeast wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Monday
Showers. The rain could be heavy at times. High near 83. Southeast wind 7 to 10 mph. Chance of precipitation is 100%.
Monday Night
Showers. The rain could be heavy at times. Low around 74. East southeast wind 5 to 9 mph. Chance of precipitation is 80%.
Tuesday
Showers, mainly before noon. The rain could be heavy at times. High near 83. East northeast wind 6 to 10 mph. Chance of precipitation is 80%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 73. Northeast wind 6 to 10 mph. Chance of precipitation is 40%.
Wednesday
Scattered showers. Partly sunny, with a high near 83. Northeast wind 6 to 9 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 73. North northeast wind 5 to 9 mph. Chance of precipitation is 40%.
Thursday
Scattered showers. Partly sunny, with a high near 83. Northeast wind 5 to 8 mph. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Hilo International Airport HI
 19.7°N 155.02°W (Elev. 36 ft)
Last Update:
8:40 am HST Aug 21, 2026
Forecast Valid:
12pm HST Aug 21, 2026-6pm HST Aug 27, 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