Trinidad, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Trinidad, a city in Humboldt County, California.
Overnight
52°F
Partly Cloudy
Partly cloudy, with a low around 52. Southwest wind around 1 mph.
7-day forecast for Trinidad
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Partly Cloudy | 1 mph SW | 0% |
| Tuesday | 64°F | Patchy Smoke | 1 to 10 mph SSE | 0% |
| Tuesday Night | 57°F | Patchy Smoke | 2 to 9 mph SSE | 0% |
| Wednesday | 64°F | Patchy Smoke then Mostly Sunny | 5 mph SSW | 0% |
| Wednesday Night | 55°F | Partly Cloudy | 1 to 5 mph NNW | 0% |
| Thursday | 63°F | Mostly Sunny | 1 to 6 mph NW | 0% |
| Thursday Night | 55°F | Partly Cloudy | 2 to 6 mph NNW | 0% |
| Friday | 64°F | Mostly Sunny | 2 to 8 mph NNW | 0% |
| Friday Night | 56°F | Partly Cloudy | 1 to 8 mph N | 0% |
| Saturday | 65°F | Mostly Sunny | 2 to 10 mph NNW | 0% |
| Saturday Night | 55°F | Partly Cloudy | 5 to 10 mph NNW | 0% |
| Sunday | 63°F | Mostly Sunny | 5 to 14 mph NNW | 0% |
| Sunday Night | 54°F | Partly Cloudy | 6 to 14 mph NNW | 0% |
| Monday | 62°F | Mostly Sunny | 6 to 14 mph NNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Trinidad (41.058, -124.143). Updated through the day.
Growing snapshot for Trinidad
Last spring frost
Mar 8
First fall frost
Nov 30
Growing season
262 days
Hardiness zone
9b
More local growing data for Trinidad: nearby ZIP 95570 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Alderpoint
Arcata
Bayview
Benbow
Big Lagoon
Blue Lake
Cutten
Eureka
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
Climate data from the nearest NOAA station, Arcata Eureka Ap, Ca (9.5 mi from Trinidad). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.