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
Start of December brings a shift in the average high-temperature, falling from November's chilly 45.9°F (7.7°C) to a cold 35.1°F (1.7°C). The average temperature drops to a subzero cold 24.3°F (-4.3°C) during the night in the month of December.Humidity
In Greenfield, Massachusetts, the average relative humidity in December is 81%.Rainfall
The wettest months in Greenfield are October and December, with an average 3.03" (77mm) of rainfall.Snowfall
January through May, October through December are months with snowfall in Greenfield. In Greenfield, during December, snow falls for 7.5 days and regularly aggregates up to 4.8" (122mm) of snow. In Greenfield, during the entire year, snow falls for 42.1 days and aggregates up to 24.53" (623mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in Greenfield.On the first day of December in Greenfield, sunrise is at 7:01 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:27 pm EST.
Sunshine
In December, the average sunshine is 5h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The UV index of 2 in December translates into these instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
How cold is it in Greenfield in December?
What is the average humidity in December in Greenfield?
What is the rainiest month in Greenfield?
How much does it rain in Greenfield in December?
How many days does it snow in December in Greenfield?
What is the month with the shortest days in Greenfield?
How many hours of daylight does Greenfield have in December?
When is the sunrise / sunset in December in Greenfield?
How many hours of sunshine does Greenfield have in December?
When is the lowest UV index in Greenfield?
What is the UV index reading in December in Greenfield?
Average temperature in December
Greenfield, MA
- Average high temperature in December: 35.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in December: 24.3°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in December
Greenfield, MA
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Greenfield, MA
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Greenfield, MA
- Average humidity in December: 81%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Greenfield, MA
- Average rainfall in December: 3.03"
The wettest months (with the highest rainfall) are October and December (3.03").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Greenfield, MA
- Average rainfall days in December: 11.9 days
The months with the highest number of rainy days are May and July (16.3 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in December
Greenfield, MA
- Average snowfall in December: 4.8"
The month with the highest snowfall is February (7.01").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Greenfield, MA
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Greenfield, MA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 5h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Greenfield, MA
- Average sunshine days in December: 15.2 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in December
Greenfield, 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, October, November and December (UV index 2).
Average cloud cover in December
Greenfield, MA
- Average cloud cover in December: 46
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Greenfield, MA
- Average visibility in December: 6mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
Greenfield, Massachusetts, USA
Weather forecast for your location
2. Allow the app to use your location