Arcata, CA Weather & Growing Conditions
Tonight
44°F
Partly Cloudy
Partly cloudy, with a low around 44. East southeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Partly Cloudy | 2 mph ESE | 1% |
| Wednesday | 60°F | Partly Sunny then Slight Chance Light Rain | 1 to 5 mph NW | 18% |
| Wednesday Night | 46°F | Slight Chance Light Rain then Patchy Fog | 5 mph NNW | 18% |
| Thursday | 60°F | Patchy Fog then Mostly Sunny | 5 mph NNW | 3% |
| Thursday Night | 44°F | Patchy Fog | 1 to 5 mph NE | 0% |
| Friday | 61°F | Mostly Sunny | 0 to 3 mph SE | 0% |
| Friday Night | 47°F | Mostly Clear | 2 mph ENE | 0% |
| Saturday | 64°F | Mostly Sunny | 0 to 3 mph S | 2% |
| Saturday Night | 50°F | Slight Chance Light Rain | 1 to 5 mph S | 21% |
| Sunday | 61°F | Slight Chance Light Rain then Patchy Fog | 0 to 3 mph N | 21% |
| Sunday Night | 48°F | Areas Of Fog | 1 mph E | 18% |
| Monday | 60°F | Areas Of Fog | 0 to 3 mph SSW | 18% |
| Monday Night | 47°F | Slight Chance Light Rain | 3 mph SSE | 21% |
| Tuesday | 62°F | Chance Light Rain | 3 mph S | 31% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Arcata, CA
Last spring frost
Feb 22
First fall frost
Dec 7
Growing season
293 days
Hardiness zone
9b
Explore more for Arcata, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Eureka Wfo Woodley Island, Ca (6.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.