Fern Forest, HI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fern Forest, a community in Hawaii County, Hawaii.
Overnight
65°F
Scattered Rain Showers
Scattered rain showers. Mostly cloudy, with a low around 65. Northwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Fern Forest
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Scattered Rain Showers | 5 mph NW | 45% |
| Tuesday | 75°F | Scattered Rain Showers | 3 to 9 mph NNE | 50% |
| Tuesday Night | 65°F | Chance Rain Showers | 6 to 9 mph N | 65% |
| Wednesday | 75°F | Scattered Rain Showers | 6 to 10 mph NNE | 50% |
| Wednesday Night | 65°F | Chance Rain Showers | 9 mph NNE | 67% |
| Thursday | 75°F | Chance Rain Showers | 12 mph NNE | 65% |
| Thursday Night | 65°F | Chance Rain Showers | 12 mph NNE | 70% |
| Friday | 75°F | Chance Rain Showers | 10 to 15 mph NNE | 62% |
| Friday Night | 65°F | Chance Rain Showers | 13 mph NNE | 74% |
| Saturday | 75°F | Occasional Rain Showers | 10 to 14 mph NNE | 76% |
| Saturday Night | 66°F | Chance Rain Showers | 8 to 12 mph NNE | 71% |
| Sunday | 74°F | Occasional Rain Showers | 8 to 12 mph NE | 84% |
| Sunday Night | 66°F | Chance Rain Showers | 10 mph NE | 65% |
| Monday | 75°F | Occasional Rain Showers | 10 to 15 mph NE | 75% |
Forecast source: National Weather Service (api.weather.gov) for Fern Forest (19.465, -155.132). Updated through the day.
Growing snapshot for Fern Forest
Growing season
365 days
More local growing data for Fern Forest: nearby ZIP 96778 weather · frost dates · planting calendar · Hawaii frost dates
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Climate data from the nearest NOAA station, Glenwood #2 55.4, Hi (7.2 mi from Fern Forest). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.