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March 2026 Severe Weather and Flash Flooding - 3/10 to 3/24

Hazardous Weather Conditions

Flood Watch in effect from April 8, 06:00 AM HST until April 10, 06:00 PM HST

Current conditions at

Hilo, Hilo International Airport (PHTO)

Lat: 19.72°NLon: 155.06°WElev: 36ft.

Mostly Cloudy

75°F

24°C

Humidity	82%
Wind Speed	S 6 mph
Barometer	29.99 in (1015.4 mb)
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Last update	7 Apr 8:53 am HST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Hilo International Airport HI

Flood Watch April 8, 06:00am until April 10, 06:00pm

Click here for hazard details and duration

Flood Watch

Today
High: 78 °F
Showers
Tonight
Low: 69 °F
Showers
Wednesday
High: 79 °F
Heavy Rain
Wednesday Night
Low: 69 °F
Heavy Rain
Thursday
High: 79 °F
Scattered
Showers
Thursday Night
Low: 69 °F
Heavy Rain
Friday
High: 80 °F
Heavy Rain
Friday Night
Low: 70 °F
Heavy Rain
Saturday
High: 82 °F
Heavy Rain

Detailed Forecast

Today

Showers likely, then showers and possibly a thunderstorm after noon. High near 78. Light and variable wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

Tonight

Showers and possibly a thunderstorm. Low around 69. South wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between 2 and 3 inches possible.

Wednesday

Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Some of the storms could produce heavy rainfall. Cloudy, with a high near 79. South southeast wind 7 to 11 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday Night

Showers likely and possibly a thunderstorm before midnight, then scattered showers and thunderstorms after midnight. Some of the storms could produce heavy rainfall. Cloudy, with a low around 69. South wind 11 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.

Thursday

Scattered showers. Cloudy, with a high near 79. South wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 50%. New precipitation amounts between a half and three quarters of an inch possible.

Thursday Night

Showers likely. The rain could be heavy at times. Cloudy, with a low around 69. South wind 9 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between 1 and 2 inches possible.

Friday

Scattered showers, with thunderstorms also possible after noon. Some of the storms could produce heavy rainfall. Cloudy, with a high near 80. South southeast wind 5 to 9 mph becoming light south. Chance of precipitation is 50%.

Friday Night

Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Cloudy, with a low around 70. South wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 40%.

Saturday

Isolated showers, then scattered showers and thunderstorms after noon. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 82. East northeast wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 40%.

Saturday Night

Scattered showers, mainly before midnight. Partly cloudy, with a low around 70. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 30%.

Sunday

Scattered showers. Partly sunny, with a high near 82. East wind around 6 mph becoming calm in the afternoon. Chance of precipitation is 50%.

Sunday Night

Scattered showers. Mostly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 50%.

Monday

Scattered showers. Partly sunny, with a high near 80. East southeast wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 40%.