Williamsport Weather in December

December in Williamsport sees daytime temperatures around 5°C (41°F) and lows of -3°C (27°F) at night. With around 99 mm (3.9 in) of snow/rainfall expected, it's worth packing a rain jacket.

Rainfall in Williamsport in December

Historically, approximately 12 days this month are expected to have snow/rain, averaging 99 mm (3.9 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Williamsport in December

December in Williamsport sees highs of 5°C (41°F) and lows of -3°C (27°F) overnight. During December, the winter season is in full swing. Expect a distinctly cold feel throughout the day, not just overnight. Nights drop below freezing to -3°C (27°F). An extra blanket is worth packing if you're unsure about the heating where you're staying. This month is characterized by its cold weather, so make sure to wear sufficient layers to stay warm.

December in Williamsport 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.