South Boston Weather in December

December in South Boston typically sees daytime highs of 12°C (54°F) and nighttime lows of -1°C (30°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the winter season.

Rainfall in South Boston in December

Expect around 12 days of snow/rain based on historical data, with 105 mm (4.1 in) average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in South Boston in December

South Boston in December gets highs of 12°C (54°F) during the day and drops to -1°C (30°F) at night. Winter occurs in December. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. Nights are well below freezing at -1°C (30°F). An extra blanket is a good idea if you feel the cold, especially in older or less well-heated accommodation.

December in South Boston 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.