San Dimas Weather in December

December in San Dimas brings pleasant temperatures, with daytime highs of 19°C (66°F) and nights around 6°C (43°F). It's also the wettest month of the year, so an umbrella is a must.

Rainfall in San Dimas in December

The month brings the most rain, so be prepared with an umbrella for the occasional shower. This month experiences about 9 days of rain according to historical data, averaging 93 mm (3.7 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in San Dimas in December

San Dimas in December gets highs of 19°C (66°F) during the day and drops to 6°C (43°F) at night. December is known for being in the winter season. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows around 6°C (43°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep. Experience mild yet warm temperatures during this month, offering a comfortable climate.

Sunshine in San Dimas in December

The days are predominantly sunny, with an estimated total of around 205 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

If your ideal day consists of dry skies and pleasant temperatures, January, February, March, April, May, October and November typically offer the best circumstances for San Dimas.