Weather World
City of Arcata, CAArcata, CA 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Arcata, CA Weather Forecast
Arcata, CA Weather Forecast Date: 136 AM PDT Wed Oct 07 2026
The area/counties/county of: Northern Coastal Humboldt, including the cities of: Eureka, Samoa, Arcata, Arcata Arpt, Fieldbrook, Fernbridge, and Fortuna.or toggle through each period.
Today... Mostly sunny. Patchy fog in the morning. Highs 68 to 83. Light winds becoming northwest around 5 mph in the afternoon.
Tonight... Partly cloudy. Patchy fog. Lows 48 to 58. Northwest wind around 5 mph in the evening becoming light.
Thursday... Mostly sunny. Highs 73 to 88. Light winds becoming northwest around 5 mph in the afternoon.
Thursday Night... Partly cloudy. Lows 50 to 60. North wind around 5 mph.
Friday... Partly cloudy. Highs 60 to 72. North wind around 15 mph.
Friday Night... Mostly cloudy. Lows 45 to 55.
Saturday... Partly cloudy. Highs 54 to 66. Lows 40 to 50.
Sunday... Partly cloudy. Highs 54 to 66. Lows 40 to 50.
Columbus Day... Partly cloudy. Highs 60 to 71. Lows 41 to 51.
POP = Probability of Precipitation
Arcata Radar Loop
Use the map search tool if you want to place a location marker on the radar map...