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Royal Kunia, HI Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Royal Kunia, a community in Honolulu County, Hawaii.

Overnight
73°F
Isolated Rain Showers
Isolated rain showers. Partly cloudy, with a low around 73. North northeast wind around 6 mph. Chance of precipitation is 20%.

7-day forecast for Royal Kunia

WhenTempForecastWindPrecip
Overnight 73°F Isolated Rain Showers 6 mph NNE 19%
Tuesday 84°F Isolated Rain Showers 3 to 7 mph NE 22%
Tuesday Night 73°F Scattered Rain Showers 8 mph ENE 25%
Wednesday 84°F Isolated Rain Showers 8 mph ENE 18%
Wednesday Night 73°F Scattered Rain Showers 8 mph ENE 28%
Thursday 84°F Isolated Rain Showers 10 mph ENE 22%
Thursday Night 73°F Scattered Rain Showers 10 mph ENE 28%
Friday 85°F Isolated Rain Showers 12 mph ENE 22%
Friday Night 74°F Partly Cloudy then Scattered Rain Showers 13 mph ENE 27%
Saturday 86°F Sunny 12 to 15 mph ENE 9%
Saturday Night 74°F Mostly Clear 12 mph ENE 12%
Sunday 86°F Mostly Sunny 13 mph ENE 10%
Sunday Night 74°F Partly Cloudy then Isolated Rain Showers 13 mph ENE 22%
Monday 86°F Sunny 12 to 16 mph ENE 6%

Forecast source: National Weather Service (api.weather.gov) for Royal Kunia (21.405, -158.032). Updated through the day.

Growing snapshot for Royal Kunia

Growing season
365 days

More local growing data for Royal Kunia: nearby ZIP 96797 weather · frost dates · planting calendar · Hawaii frost dates

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Climate data from the nearest NOAA station, Upper Wahiawa 874.3, Hi (6.3 mi from Royal Kunia). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.