Arcata, CA Weather & Growing Conditions
Overnight
58°F
Mostly Clear
Mostly clear, with a low around 58. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Mostly Clear | 0 mph | 0% |
| Tuesday | 79°F | Patchy Smoke | 0 to 7 mph SW | 0% |
| Tuesday Night | 60°F | Patchy Smoke | 0 to 6 mph WSW | 0% |
| Wednesday | 75°F | Patchy Smoke then Sunny | 0 to 6 mph WNW | 0% |
| Wednesday Night | 57°F | Partly Cloudy | 0 to 5 mph NW | 0% |
| Thursday | 74°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Thursday Night | 55°F | Partly Cloudy | 0 to 3 mph NNW | 0% |
| Friday | 74°F | Mostly Sunny | 0 to 5 mph NNW | 0% |
| Friday Night | 56°F | Partly Cloudy | 0 to 5 mph NW | 0% |
| Saturday | 73°F | Mostly Sunny | 0 to 6 mph NW | 0% |
| Saturday Night | 53°F | Partly Cloudy then Patchy Fog | 0 to 6 mph NNW | 1% |
| Sunday | 70°F | Patchy Fog then Mostly Sunny | 0 to 6 mph NNW | 0% |
| Sunday Night | 53°F | Partly Cloudy | 0 to 6 mph NNW | 0% |
| Monday | 69°F | Mostly Sunny | 0 to 6 mph NW | 0% |
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 Aug 4, 2026.