Fern Forest, HI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fern Forest, a community in Hawaii County, Hawaii.
Tonight
63°F
Occasional Rain Showers
Occasional rain showers. Mostly cloudy, with a low around 63. North wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Fern Forest
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Occasional Rain Showers | 14 mph N | 87% |
| Wednesday | 71°F | Occasional Rain Showers | 9 to 16 mph NNE | 88% |
| Wednesday Night | 64°F | Occasional Rain Showers | 12 mph NNE | 80% |
| Thursday | 71°F | Chance Rain Showers | 13 mph NNE | 59% |
| Thursday Night | 65°F | Chance Rain Showers | 12 mph NNW | 71% |
| Friday | 71°F | Chance Rain Showers | 14 mph NNE | 69% |
| Friday Night | 65°F | Chance Rain Showers | 15 mph NNE | 68% |
| Saturday | 71°F | Scattered Rain Showers | 15 mph NNE | 47% |
| Saturday Night | 63°F | Rain Showers Likely | 14 mph N | 56% |
| Sunday | 71°F | Scattered Rain Showers | 16 mph NNE | 49% |
| Sunday Night | 62°F | Scattered Rain Showers | 13 to 16 mph NNE | 54% |
| Monday | 71°F | Scattered Rain Showers | 15 mph NNE | 48% |
| Monday Night | 61°F | Scattered Rain Showers | 14 mph NNE | 50% |
| Tuesday | 71°F | Scattered Rain Showers | 14 to 18 mph NNE | 41% |
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 Nov 4, 2026.