Boston weather in December
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Boston December weather at a glance
In December, Boston averages -0.3°C, with typical highs of 3.3°C and lows of -4°C. The historical average is 11 wet days and 68% humidity.
Boston December temperature & humidity
Boston December rain & wet days
Pack a compact umbrella. Keep an indoor stop available between outdoor activities.
What to wear in Boston in December
Pack a warm insulated coat, thermal layers, gloves and a scarf. Showers are possible, so a compact umbrella is useful.
- DaytimeWarm coat and layered tops · average high 3.3°C
- Morning & eveningInsulating coat, scarf and gloves · average low -4°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Boston December sunrise & sunset times
2026 December · Local time (America/New_York)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-12-01 | 06:54 | 16:13 | 9h 19m |
| 2026-12-15 | 07:06 | 16:12 | 9h 6m |
| 2026-12-31 | 07:13 | 16:21 | 9h 8m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
Boston travel updates
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Today’s weather and forecast
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Forecast · Windy. Monthly averages are in the Temperature section.
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Best months to visit Boston
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
December weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Boston weather like in December?
In December, Boston averages -0.3°C, with typical highs of 3.3°C and lows of -4°C. The historical average is 11 wet days and 68% humidity. Our weather-comfort rating for this month is challenging.
Does it rain a lot in Boston in December?
There are about 11 wet days in December. A compact umbrella is still useful.
What should I wear in Boston in December?
Pack a warm insulated coat, thermal layers, gloves and a scarf. Showers are possible, so a compact umbrella is useful.
What are the best months to visit Boston?
Recent weather data rates June, August, September, October among the more comfortable months.
Where can I check Boston weather in December in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Boston in December?
On 2026-12-15, calculated sunrise is 07:06 and sunset is 16:12 in local time (America/New_York). Times vary by date and terrain.
Boston weather by month
More Americas destinations in December
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations