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Weather in Boston for December 2025

Your guide to Boston weather in December - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Boston during December is quite rare, with fewer than 2 snowy days on average.
    According to Boston snow forecast for December 2025, 1 snowy day is expected until the end of the month at Thursday, 25 December.

    • Temperatures

  • Until now, December 2025 in Boston has been nearly identical to the historical average, with a temperature of 9.8 °C (showing only a slight deviation of 0.4 °C).

  • Expect cooler weather in the next days in Boston with the forecast suggesting a temperature of 7.4 °C, lower than the historical average.

  • In general, the average temperature in Boston at the beginning of December is 10.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 7.1 °C by the end of December.

    • Rain 🌧️

  • The climate of Boston in December is notably wet, with an average of 15 rainy days, and a total of 64.4 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
16
Dry days
Average rainy days
15
Rainy days
Average snowy days
0
Snow days
Average temperatures
9°/5°
Temperatures
Average wind speed
27 km/h
Avg max wind
Average humidity
85 %
Avg humidity

Boston Weather December

Move between months or click on a day
November
January
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Moderate rain at times
12°
2
Patchy rain possible
10°
3
Overcast
7°
4
Overcast
8°
5
Moderate or heavy rain shower
12°
6
Overcast
9°
7
Moderate rain at times
13°
8
Moderate or heavy rain shower
10°
9
Patchy rain possible
10°
10
Overcast
9°
11
Patchy rain possible
8°
12
Patchy rain possible
9°
13
Patchy rain possible
7°
14
Overcast
8°
15
Overcast
11°
16
Moderate rain
9°
17
Patchy rain possible
8°
18
Moderate rain
11°
19
Sunny
8°
20
Patchy rain possible
8°
21
Patchy rain possible
7°
22
Patchy rain possible
9°
23
Patchy rain possible
8°
24
Patchy rain possible
5°
25
Patchy rain possible
5°
26
Patchy rain possible
5°
27
Patchy rain possible
6°
28
Patchy rain possible
7°
29
Patchy rain possible
8°
30
Partly cloudy
8°
31
Patchy rain possible
11°

Temperatures trend during December in Boston

See the weather trend as well as the moving average line

December weather in Boston day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
1 Dec. Moderate rain at times
Moderate rain at times
 12° /7° 3.1 mm 0 cm
2 Dec. Patchy rain possible
Patchy rain possible
 10° /4° 0.6 mm 0 cm
3 Dec. Overcast
Overcast
 7° /2° 0.2 mm 0 cm
4 Dec. Overcast
Overcast
 8° /2° 2.2 mm 0 cm
5 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 12° /5° 10.9 mm 0 cm
6 Dec. Overcast
Overcast
 9° /6° 7.1 mm 0 cm
7 Dec. Moderate rain at times
Moderate rain at times
 13° /6° 4.7 mm 0 cm
8 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /7° 6.7 mm 0 cm
9 Dec. Patchy rain possible
Patchy rain possible
 10° /7° 5.2 mm 0 cm
10 Dec. Overcast
Overcast
 9° /6° 0.1 mm 0 cm
11 Dec. Patchy rain possible
Patchy rain possible
 8° /5° 0.1 mm 0 cm
12 Dec. Patchy rain possible
Patchy rain possible
 9° /6° 1.5 mm 0 cm
13 Dec. Patchy rain possible
Patchy rain possible
 7° /5° 0.1 mm 0 cm
14 Dec. Overcast
Overcast
 8° /5° 0.3 mm 0 cm
15 Dec. Overcast
Overcast
 11° /4° 0 mm 0 cm
16 Dec. Moderate rain
Moderate rain
 9° /5° 8.5 mm 0 cm
17 Dec. Patchy rain possible
Patchy rain possible
 8° /3° 1.2 mm 0 cm
18 Dec. Moderate rain
Moderate rain
 11° /8° 18.7 mm 0 cm
19 Dec. Sunny
Sunny
 8° /5° 0 mm 0 cm
20 Dec. Patchy rain possible
Patchy rain possible
 8° /5° 0.5 mm 0 cm
21 Dec. Patchy rain possible
Patchy rain possible
 7° /6° 1.3 mm 0 cm
22 Dec. Patchy rain possible
Patchy rain possible
 9° /6° 2.7 mm 0 cm
23 Dec. Patchy rain possible
Patchy rain possible
 8° /6° 0.1 mm 0 cm
24 Dec. Patchy rain possible
Patchy rain possible
 5° /4° 0.5 mm 0 cm
25 Dec. Patchy rain possible
Patchy rain possible
 5° /4° 1.1 mm 0.1 cm
26 Dec. Patchy rain possible
Patchy rain possible
 5° /4° 0.7 mm 0 cm
27 Dec. Patchy rain possible
Patchy rain possible
 6° /4° 1.1 mm 0 cm
28 Dec. Patchy rain possible
Patchy rain possible
 7° /5° 0.5 mm 0 cm
29 Dec. Patchy rain possible
Patchy rain possible
 8° /6° 0.1 mm 0 cm
30 Dec. Partly cloudy
Partly cloudy
 8° /4° 0 mm 0 cm
31 Dec. Patchy rain possible
Patchy rain possible
 11° /7° 0.6 mm 0 cm
Next
Important Notice
Our weather forecast for Boston in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Boston forecast closer to your planned date for the most up-to-date weather information.
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Boston in December - FAQ

What are the expected maximum and minimum temperatures in Boston during December?
During December, expect a variety of temperatures with highs around 9° and lows near 5°, suitable for diverse activities and preferences.
How much rainfall should be expected in Boston during December?
Moderate rainfall is anticipated in Boston during December, with a total of 64.4 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
Will it snow in Boston in December 2025?
Boston typically sees 0 cm of snowfall during December.
What are the typical wind conditions in Boston during December?
The average wind speed in Boston during December is 27 km/h, suggesting breezy to windy conditions, depending on your activities.

Boston snow forecast December 2025

Track daily snowfall levels and discover Boston’s snowy potential this December ❄️

December rainfall patterns in Boston

Explore the daily rainfall trends and prepare for Bostons December weather 💧
Typically, Boston has 15 rainy days in December with a total of 64.4 mm of rainfall.

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Get accurate weather forecasts for Boston, located at latitude 52.976 and longitude -0.027. Stay updated with localized weather information tailored for Boston.

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