Atascadero Weather in December

December in Atascadero averages 16°C (61°F) during the day and 1°C (34°F) at night. It is the wettest month of the year, with 102 mm (4 in) of rainfall on average, so waterproof gear is a must.

Rainfall in Atascadero in December

This month is known for heavy rainfall, so don't forget your umbrella to stay dry. You can expect rain on around 10 days based on historical patterns, with 102 mm (4 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Atascadero in December

In December, Atascadero sees moderate temperatures, with highs of 16°C (61°F). Nights drop to around 1°C (34°F). December marks the winter season. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. At 1°C (34°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions. Enjoy a month of comfortably warm temperatures, despite being cooler than other months.

Sunshine in Atascadero in December

The days are predominantly sunny, with an estimated total of around 220 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

December in Atascadero 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.