Hazardous Weather Conditions
Current conditions at
Hilo, Hilo International Airport (PHTO)
Lat: 19.72°NLon: 155.06°WElev: 36ft.
A Few Clouds
88°F
31°C
| Humidity | 46% |
| Wind Speed | S 8 G 21 mph |
| Barometer | 29.75 in (1007.2 mb) |
| Dewpoint | 65°F (18°C) |
| Visibility | 10.00 mi |
| Heat Index | 90°F (32°C) |
| Last update | 20 Mar 2:53 pm HST |
Extended Forecast for
Hilo International Airport HI
Flood Watch March 20, 03:01pm until March 22, 06:00pm
NOW until 6:00pm Sun

Flood Watch
This Afternoon

High: 83 °F
Isolated
T-storms and
BreezyTonight

Low: 70 °F
Heavy Rain
Saturday

High: 83 °F
Heavy Rain
Saturday Night

Low: 69 °F
Heavy Rain
Sunday

High: 81 °F
Heavy Rain
Sunday Night

Low: 68 °F
Showers
LikelyMonday

High: 79 °F
Showers
LikelyMonday Night
Low: 68 °F
Showers
Likely then
Scattered
Showers
Detailed Forecast
This Afternoon
Isolated showers and thunderstorms. Mostly cloudy, with a high near 83. Breezy, with a southeast wind 9 to 15 mph, with gusts as high as 21 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. South southeast wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
Isolated showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 83. Calm wind becoming north northeast 5 to 9 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. North northeast wind 5 to 9 mph becoming south southwest after midnight. 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 81. South southwest wind 6 to 9 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 68. North northeast wind 5 to 7 mph becoming northwest 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 79. Northwest wind 6 to 10 mph becoming north northeast in the morning. Chance of precipitation is 70%.
Monday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 68. North wind 7 to 10 mph. Chance of precipitation is 70%.
Tuesday
Scattered showers. Mostly cloudy, with a high near 79. North northeast wind 8 to 13 mph. Chance of precipitation is 40%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 67. North wind 7 to 11 mph. Chance of precipitation is 40%.
Wednesday
Scattered showers. Mostly sunny, with a high near 79. North northwest wind 5 to 7 mph becoming calm in the afternoon. Chance of precipitation is 30%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%.
Thursday
Isolated showers. Partly sunny, with a high near 79. Calm wind becoming east 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
Isolated showers. Mostly cloudy, with a low around 67. South southeast wind 3 to 5 mph. Chance of precipitation is 20%.
Friday
Isolated showers. Partly sunny, with a high near 79. Light south southeast wind increasing to 6 to 11 mph in the afternoon. 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)
6:01 am HST Mar 20, 2026
3pm HST Mar 20, 2026-6pm HST Mar 27, 2026



