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 Index | 86°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
NOW until 6:00pm Sun

Flood Watch
This Afternoon

High: 84 °F
Heavy Rain
Tonight

Low: 70 °F
Heavy Rain
Sunday

High: 80 °F
Heavy Rain
Sunday Night

Low: 68 °F
Showers
LikelyMonday

High: 77 °F
Showers
LikelyMonday Night
Low: 67 °F
Showers
Likely then
Scattered
ShowersTuesday

High: 78 °F
Scattered
ShowersTuesday Night

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%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Hilo International Airport HI
19.72°N 155.04°W (Elev. 39 ft)
19.72°N 155.04°W (Elev. 39 ft)
6:02 am HST Mar 21, 2026
1pm HST Mar 21, 2026-6pm HST Mar 27, 2026



