Eureka, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Eureka, a city in Humboldt County, California.
This Afternoon
61°F
Cloudy
Cloudy. High near 61, with temperatures falling to around 57 in the afternoon. Northwest wind around 6 mph.
7-day forecast for Eureka
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 61°F | Cloudy | 6 mph NW | 2% |
| Tonight | 46°F | Patchy Fog then Mostly Cloudy | 1 to 6 mph N | 2% |
| Thursday | 61°F | Partly Sunny | 6 to 10 mph N | 0% |
| Thursday Night | 44°F | Mostly Cloudy | 2 to 7 mph NE | 0% |
| Friday | 61°F | Partly Sunny | 1 to 5 mph NNE | 0% |
| Friday Night | 47°F | Mostly Clear | 5 mph ENE | 0% |
| Saturday | 63°F | Mostly Sunny | 3 mph SSE | 2% |
| Saturday Night | 49°F | Mostly Cloudy then Chance Light Rain | 5 mph SSE | 25% |
| Sunday | 60°F | Chance Light Rain then Mostly Cloudy | 3 mph NE | 25% |
| Sunday Night | 49°F | Patchy Fog | 2 mph NE | 6% |
| Monday | 59°F | Patchy Fog then Mostly Cloudy | 1 to 5 mph NW | 6% |
| Monday Night | 47°F | Mostly Cloudy then Slight Chance Light Rain | 5 mph NE | 15% |
| Tuesday | 60°F | Slight Chance Light Rain | 5 mph SSE | 20% |
| Tuesday Night | 50°F | Chance Light Rain | 5 to 10 mph S | 29% |
Forecast source: National Weather Service (api.weather.gov) for Eureka (40.798, -124.154). Updated through the day.
Growing snapshot for Eureka
Last spring frost
Feb 22
First fall frost
Dec 7
Growing season
293 days
Hardiness zone
9b
More local growing data for Eureka: nearby ZIP 95501 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Alderpoint
Arcata
Bayview
Benbow
Big Lagoon
Blue Lake
Cutten
Fairhaven
Ferndale
Fieldbrook
Fields Landing
Fortuna
Garberville
Hoopa
Humboldt Hill
Hydesville
Indianola
Kep'el
Loleta
Manila
McKinleyville
Miranda
Myers Flat
Myrtletown
Orick
Phillipsville
Pine Hills
Redcrest
Redway
Rio Dell
Climate data from the nearest NOAA station, Eureka Wfo Woodley Island, Ca (1 mi from Eureka). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.