Harman US

Fieldbrook, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Fieldbrook, a community in Humboldt County, California.

This Afternoon
63°F
Partly Sunny
Partly sunny. High near 63, with temperatures falling to around 59 in the afternoon. East southeast wind 1 to 6 mph.

7-day forecast for Fieldbrook

WhenTempForecastWindPrecip
This Afternoon 63°F Partly Sunny 1 to 6 mph ESE 7%
Tonight 41°F Partly Cloudy 5 to 8 mph ESE 2%
Wednesday 58°F Partly Sunny then Slight Chance Light Rain 2 to 6 mph N 20%
Wednesday Night 43°F Slight Chance Light Rain then Patchy Fog 2 to 6 mph NNE 20%
Thursday 59°F Patchy Fog then Mostly Sunny 2 to 6 mph N 5%
Thursday Night 41°F Patchy Fog then Partly Cloudy 1 to 5 mph NE 0%
Friday 61°F Mostly Sunny 2 mph NW 0%
Friday Night 43°F Mostly Clear 2 mph ENE 0%
Saturday 62°F Mostly Sunny 2 mph SSE 4%
Saturday Night 47°F Slight Chance Light Rain 3 mph SSE 25%
Sunday 60°F Chance Light Rain then Patchy Fog 2 mph NNW 25%
Sunday Night 45°F Areas Of Fog 1 mph ENE 18%
Monday 59°F Patchy Fog 2 mph SSW 18%
Monday Night 43°F Slight Chance Light Rain 3 mph SE 22%

Forecast source: National Weather Service (api.weather.gov) for Fieldbrook (40.973, -124.029). Updated through the day.

Growing snapshot for Fieldbrook

Last spring frost
Mar 8
First fall frost
Nov 30
Growing season
262 days
Hardiness zone
9b

More local growing data for Fieldbrook: nearby ZIP 95519 weather · frost dates · planting calendar · California frost dates

Nearby towns & communities

All California locations ›

Climate data from the nearest NOAA station, Arcata Eureka Ap, Ca (3.1 mi from Fieldbrook). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.