Harman US

Wahiawa, HI Weather & Growing Conditions

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

Overnight
70°F
Scattered Rain Showers
Scattered rain showers. Mostly cloudy, with a low around 70. Northeast wind 3 to 9 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Wahiawa

WhenTempForecastWindPrecip
Overnight 70°F Scattered Rain Showers 3 to 9 mph NE 41%
Tuesday 82°F Scattered Rain Showers 3 to 10 mph ENE 44%
Tuesday Night 71°F Scattered Rain Showers 10 mph ENE 44%
Wednesday 82°F Scattered Rain Showers 9 mph ENE 38%
Wednesday Night 71°F Scattered Rain Showers 9 mph ENE 52%
Thursday 82°F Scattered Rain Showers 10 mph ENE 48%
Thursday Night 71°F Scattered Rain Showers 13 mph ENE 52%
Friday 83°F Scattered Rain Showers 14 mph ENE 39%
Friday Night 72°F Scattered Rain Showers 15 mph ENE 48%
Saturday 83°F Scattered Rain Showers 16 mph ENE 35%
Saturday Night 72°F Chance Rain Showers 15 mph ENE 55%
Sunday 83°F Scattered Rain Showers 15 mph ENE 38%
Sunday Night 72°F Scattered Rain Showers 12 to 15 mph ENE 50%
Monday 83°F Scattered Rain Showers 12 to 15 mph ENE 40%

Forecast source: National Weather Service (api.weather.gov) for Wahiawa (21.501, -158.018). Updated through the day.

Growing snapshot for Wahiawa

Growing season
365 days

More local growing data for Wahiawa: nearby ZIP 96786 weather · frost dates · planting calendar · Hawaii frost dates

Nearby towns & communities

All Hawaii locations ›

Climate data from the nearest NOAA station, Upper Wahiawa 874.3, Hi (2.7 mi from Wahiawa). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.