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4. December

Temperature

4.9°C

40.8°F

High temperature

7.9°C

46.3°F

Low temperature

1.8°C

35.2°F

Feels like

2.1°C

35.7°F

Rainy days

16 days

Rainfall level

4.75mm

0.19 inch

Cloud coverage

69.8%

Wind speed

24.8km/h

15.4mph

Daylight time

9:08:16

UV index

2.7

1

8.3°C

47.0°F

2

8.7°C

48.0°F

3

7.1°C

45.0°F

4

6.3°C

43.0°F

5

2.7°C

37.0°F

6

-0.8°C

31.0°F

7

-2.5°C

28.0°F

8

1.6°C

35.0°F

9

6.4°C

44.0°F

10

12.0°C

54.0°F

11

8.1°C

47.0°F

12

3.3°C

38.0°F

13

3.9°C

39.0°F

14

0.0°C

32.0°F

15

6.6°C

44.0°F

16

7.1°C

45.0°F

17

7.6°C

46.0°F

18

13.2°C

56.0°F

19

5.8°C

42.0°F

20

2.4°C

36.0°F

21

0.0°C

32.0°F

22

-2.3°C

28.0°F

23

1.2°C

34.0°F

24

5.5°C

42.0°F

25

7.0°C

45.0°F

26

4.8°C

41.0°F

27

7.3°C

45.0°F

28

6.8°C

44.0°F

29

6.1°C

43.0°F

30

5.8°C

42.0°F

31

2.1°C

36.0°F

In December, Boston experiences cool temperatures with an average daily temperature of 4.9°C (40.8°F). High temperatures reach 7.9°C (46.3°F) on average, while overnight lows drop down to around 1.8°C (35.2°F). Overall, the city feels slightly colder than the actual temperatures, with an average daily “feels like” temperature of 2.1°C (35.7°F). Boston sees moderate humidity levels in December, averaging around 75.7%. The city has a higher chance of precipitation, with an average of 16.3 days in the month. There is a 48.4% probability of precipitation, with rain being the most common type. Additionally, Boston receives a small amount of snow, around 0.04" (0.1 cm) on average in December, but this can vary widely. Winds are moderately strong, with an average speed of 24.8 km/h (15.4 mph), including gusts, which can reach up to 36.8 km/h (22.9 mph). Boston has an average cloud cover of 69.8% in December, and visibility is typically good, averaging 13.7 km (8.5 miles).

How hot is Boston in December?

The hot temperature in December in Boston rises to 16.8°C (62.2°F) on sunny days with low cloud coverage and 75.7% humidity. During hottest days of December it feels like 16.8 °C (62.2°F). The average maximum temp in Boston is 7.9°C (62.2°F) during day time in December.

How cold is Boston in December?

The coldest temp in Boston in December drops to -6.2°C (20.8°F) during the cold nights. With 24.8km/h (15.4mph) winds and 75.7% humidity it feels like -13°C (8.6°F) on the coldest nights. The average minimum temperature is 1.8°C (35.2°F) during night time in December.

Does it rain in Boston in December?

Yes, it rains for 16 days in Boston, United States in December averaging 4.75 mm of precipitation. Boston has a 48.4% chance for rain throughout the entire month of December.

How much does it rain in Boston throughout December?

Boston has 4.75 mm (0.19 inch) of rain per day on average in December. It rains for an average of 16 days out of the entire month.

Does it snow in Boston in December?

Yes, it snows in Boston during December. The average snowfall is 0.04 cm (0.01 inch) per day. And there is 0 cm (0 inch) of snow on the ground.

What is the direction of the wind in Boston in December?

Most days of December the wind is blowing from South-Southwest direction in Boston.

What are the humidity levels in Boston in December?

The average humidity levels in Boston in December are 75.7%. Daily humidity levels in Boston range from 43.4% to 99.7% during December.

How many hours of daylight are in Boston in December?

Boston has 9 hours 08 minutes of daylight in December on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Boston in December is at 7:05:49 and the sunset is at 16:14:06.

What is the cloud coverage in Boston in December?

Clouds cover 69.8% of the sky on average throughout December in Boston. The cloud coverage ranges from 12.8% to 100% depending on the day of the month.

What is the UV level in December in Boston?

The average UV index in Boston is 2.7 in December. UV levels change throughout the month and range from 0 to 5.

What is the solar radiation in Boston in December?

The average solar radiation is 46.8 W/m2 (Watts per square meter) in Boston during December. However solar radiation levels change throughout the month and range from 7 W/m2 to 79.9 W/m2.

What is the solar energy during December in Boston?

The average solar energy during December in Boston is 4 MJ/m2 (megajoules per square metre). Solar energy ranges from 0.6 MJ/m2, to 6.9 MJ/m2 during December.

Are there severe weather risks in Boston in December?

Yes, there is a 10% risk for severe weather in Boston, United States in December.

What is the air pressure in Boston in December?

On average the air pressure in Boston in December is 1018.9 mb (millibars). Throughout the month the sea level pressure ranges from 994.1 mb to 1033.6 mb.

What is the visibility in Boston in December?

The average daylight visibility in Boston in December is 13.7 km (8.5 miles). Depending on the precipitation the visibility ranges from 3.8 km (2.4 miles) to 16 km (9.9 miles) throughout December.

What is the dew point in Boston in December?

The average dew point in Boston during December is 0.6°C (33°F).

Where is the data for Boston climate in December coming from?

The climate data for Boston, Massachusetts, United States in December is collected from the following weather stations.

• Northeastern University MA US WEATHERSTEM
• BEDFORD HANSCOM FIELD, MA US
• BOSTON, MA US
• NORWOOD MEMORIAL AIRPORT, MA US
• KB1DML Cambridge MA US
• KBED
• KBOS
• KOWD