Riverside Weather in December

December in Riverside averages 2°C (36°F) during the day and -7°C (19°F) at night. It is the wettest month of the year, with 124 mm (4.9 in) of snow/rainfall on average, so waterproof gear is a must.

Rainfall in Riverside in December

As the month with the most rain, you'll want to have an umbrella with you to manage the frequent showers. Expect around 15 days of snow/rain based on historical data, with 124 mm (4.9 in) average. 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 Riverside in December

In December, Riverside gets very low temperatures, with highs of 2°C (36°F). Nights cool to around -7°C (19°F). December is in the winter season. Expect a distinctly cold feel throughout the day, not just overnight. At -7°C (19°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. It is a very cold month, so be prepared and make sure to dress up warm. It's always better to be prepared than to find oneself shivering in the cold.

Sunshine in Riverside in December

The area experiences a moderate amount of sunshine, with approximately 101 hours of sunlight expected. This means a decent mix of sun and overcast.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Riverside.