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
December's onset brings a slight change in high-temperatures, falling from a frosty 45.1°F (7.3°C) in November to a cold 34.7°F (1.5°C). Throughout the month of December, Knightville observes an average nighttime temperature of 24.1°F (-4.4°C).Humidity
The average relative humidity in December is 82%.Rainfall
In Knightville, in December, it is raining for 10.9 days, with typically 3.15" (80mm) of accumulated precipitation. In Knightville, during the entire year, the rain falls for 155.8 days and collects up to 32.87" (835mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Knightville, during December, snow falls for 9.5 days and regularly aggregates up to 6.22" (158mm) of snow. In Knightville, Massachusetts, during the entire year, snow falls for 54.3 days and aggregates up to 34.45" (875mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:01 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:29 pm EST.
Sunshine
The average sunshine in December is 4.4h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, an average UV index of 2 transforms into the following instructions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Knightville have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Knightville have in December?
What is the month with the lowest UV index in Knightville?
How high is the UV index in December?
Average temperature in December
Knightville, MA
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Knightville, MA
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Knightville, MA
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Knightville, MA
- Average humidity in December: 82%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (74%).
Average rainfall in December
Knightville, MA
- Average rainfall in December: 3.15"
The wettest month (with the highest rainfall) is October (3.35").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in December
Knightville, MA
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in December
Knightville, MA
- Average snowfall in December: 6.22"
The month with the highest snowfall is February (7.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Knightville, MA
- Average snowfall days in December: 9.5 days
The month with the highest number of snowfall days is February (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Knightville, MA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in December
Knightville, MA
- Average sunshine days in December: 14.6 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in December
Knightville, MA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Knightville, MA
- Average cloud cover in December: 52
The month with the most cloud cover is February (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in December
Knightville, MA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Knightville, Massachusetts, USA
Weather forecast for your location
2. Allow the app to use your location