Arcata Weather in December

Arcata in December sees moderate daytime temperatures of 12°C (54°F) and nighttime lows of 4°C (39°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.

Rainfall in Arcata in December

Prepare for intense rain this month, as it marks the peak rainfall period. Having a poncho will keep you dry through the downpours. Records from the past 30 years suggest around 19 days of rain, with 227 mm (8.9 in) average for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.

Temperature in Arcata in December

In December, Arcata sees moderate temperatures, with highs of 12°C (54°F). Nights drop to around 4°C (39°F). The difference between afternoon and evening temperatures is usually noticeable. At 4°C (39°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions. This month often claims the chilliest averages of the year.

December in Arcata can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.