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Arcata (CA) Weather and Climate: A Comprehensive Guide

Temperatures in Arcata experience a moderate degree of variance through the seasons. Days can be pleasant, while the cooler months tend to be mild. It is also known for its large amounts of rainfall. Now, let’s explore all the climate details to give you a full picture.

Average maximum day and minimum night temperature

The climate in Arcata experiences moderate temperature changes, with mild shifts between seasons. Typically, average maximum daytime temperatures range from a pleasant 20°C in September to a moderate 12°C in the coolest month, December.

Nights are cooler, with lows often dropping to around 4°C during the colder months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Arcata has a notably wet climate with abundant precipitation, recording 1140 mm of rainfall per year. The climate in Arcata shows significant variation throughout the year. Expect heavy rainfall in December, with an average of 227 mm of precipitation over 19 rainy days.

In contrast, August offers drier and sunnier days, with around 3.6 mm of rainfall over 3 rainy days. For more details, please visit our Arcata Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Forecast for Arcata (CA)

Fri   Dec 27
14°C | 10°C
SW 4 m/s
16 mm
broken clouds and rain

broken clouds and rain

Sat   Dec 28
15°C | 11°C
S 5 m/s
23 mm
overcast and heavy rain

overcast and heavy rain

Sun   Dec 29
14°C | 6°C
SW 5 m/s
45 mm
broken clouds and rain

broken clouds and rain

The best time of year to visit Arcata in the United States of America

Other facts from our historical weather data:
  • Which months have the greatest rainfall in Arcata?
    Most rainfall (rainy season) is seen in January, March and December.
  • Does Arcata have a dry season?
    Yes, the months of July and August are very dry.
  • Which is the warmest month in Arcata?
    September has an average maximum temperature of 20°C and is the warmest month of the year.
  • Which is the coldest month in Arcata?
    The coldest month is December with an average maximum temperature of 12°C.
  • Which is the wettest month in Arcata?
    December tops the wettest month list with 227 mm of rainfall.
  • Which is the driest month in Arcata?
    August is the driest month with 4 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.