Fairhaven, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairhaven, a community in Humboldt County, California.
This Afternoon
59°F
Mostly Sunny
Mostly sunny, with a high near 59. North northwest wind around 9 mph.
7-day forecast for Fairhaven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 59°F | Mostly Sunny | 9 mph NNW | 0% |
| Tonight | 54°F | Mostly Cloudy | 5 to 8 mph N | 4% |
| Saturday | 58°F | Mostly Cloudy | 5 to 9 mph N | 4% |
| Saturday Night | 54°F | Cloudy then Patchy Fog | 1 to 8 mph NNW | 3% |
| Sunday | 58°F | Patchy Fog then Cloudy | 1 to 9 mph NNW | 3% |
| Sunday Night | 54°F | Mostly Cloudy | 2 to 9 mph N | 3% |
| Monday | 59°F | Partly Sunny | 3 to 8 mph N | 0% |
| Monday Night | 54°F | Mostly Cloudy | 3 to 7 mph N | 0% |
| Tuesday | 59°F | Partly Sunny | 3 to 10 mph N | 0% |
| Tuesday Night | 54°F | Partly Cloudy | 3 to 10 mph N | 0% |
| Wednesday | 60°F | Mostly Sunny | 3 to 8 mph N | 0% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 7 mph N | 0% |
| Thursday | 61°F | Mostly Sunny | 2 to 7 mph NNW | 1% |
| Thursday Night | 54°F | Mostly Cloudy | 5 mph N | 3% |
Forecast source: National Weather Service (api.weather.gov) for Fairhaven (40.788, -124.201). Updated through the day.
Growing snapshot for Fairhaven
Last spring frost
Feb 22
First fall frost
Dec 7
Growing season
293 days
Hardiness zone
9b
More local growing data for Fairhaven: nearby ZIP 95564 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Eureka Wfo Woodley Island, Ca (2.7 mi from Fairhaven). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.