Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The start of December signals a gentle decrease in the average high-temperature, transitioning from a cool 54°F (12.2°C) in November to a chilly 45.1°F (7.3°C). December nights are marked by an average temperature drop to an icy 32.7°F (0.4°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 80%.Rainfall
In Boston, during December, the rain falls for 11.5 days and regularly aggregates up to 2.52" (64mm) of precipitation. In Boston, during the entire year, the rain falls for 160.2 days and collects up to 32.32" (821mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Boston, during December, snow falls for 5.4 days and regularly aggregates up to 1.14" (29mm) of snow. Throughout the year, there are 24.7 snowfall days, and 7.48" (190mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 7:39 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 5:34 pm EST.
Sunshine
The months with the least sunshine are January and December, with an average of 4.5h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Boston. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 2 in December suggests the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Boston in December?
What are the most humid months?
What is the average humidity in December in Boston?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Boston have in December?
What time are sunrise and sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December in Boston?
Average temperature in December
Boston, KY
- Average high temperature in December: 45.1°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in December
Boston, KY
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Boston, KY
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Boston, KY
- Average humidity in December: 80%
The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are August, September and October (74%).
Average rainfall in December
Boston, KY
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is April (3.46").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Boston, KY
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in December
Boston, KY
- Average snowfall in December: 1.14"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Boston, KY
- Average snowfall days in December: 5.4 days
The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Boston, KY
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are January and December (Average sunshine: 4h and 30min).
Average sunshine days in December
Boston, KY
- Average sunshine days in December: 16 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in December
Boston, KY
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Boston, KY
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Boston, KY
- Average visibility in December: 6mi
The months with the highest visibility are March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and May (5mi).
Boston, Kentucky, USA
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