Weather in Waltham in December
Waltham, United States averages a high of 4.8°C (40.6°F) and low of -2.7°C (27.1°F) in December, with 10 rain days and 5.8 hours of daily sunshine. Travel score: 47.9/100 (Mixed). The best time to visit Waltham is August.
High
5°C41°F
Low
-3°C27°F
🌧️
10
rain days
☀️
5.8
hrs/day sunshine
💧
72%
humidity
48— Mixed
December in Waltham is cold and occasionally wet — bring heavy winter clothing.
What are the average temperatures in Waltham?
How much does it rain in Waltham in December?
Waltham receives an average of 104.2mm of rainfall across 10 rainy days in December. The annual total is 1082.8mm.
What should I pack for Waltham in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Heavy winter coat
Cold weather with highs around 5°C
🩳
Thermal base layers
Stay warm in freezing temperatures
🧤
Warm gloves
Cold nights around -3°C
🧣
Warm scarf
Protect against cold winds
Traveling to United States in December?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31