Mammoth Lakes Weather in December

December in Mammoth Lakes brings low temperatures, with highs of 5°C (41°F) and nights dropping to -9°C (16°F). It's the rainiest month of the year, so come prepared with waterproof gear.

Rainfall in Mammoth Lakes in December

It's the month with the heaviest rainfall, so an umbrella is a must to navigate the wet weather. Expect around 9 days of snow/rain based on historical data, with 103 mm (4.1 in) average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Mammoth Lakes in December

Expect highs of 5°C (41°F) in Mammoth Lakes in December, with nights dropping to around -9°C (16°F). The winter season is characteristic of December. Staying warm is the main priority this month, especially during mornings and evenings. At -9°C (16°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. It's generally the coldest month of the year, making it essential to pack warm layers and winter accessories.

December in Mammoth Lakes has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.