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 involves a temperature drop, moving from a chilly 45.5°F (7.5°C) in November to an icy 34.9°F (1.6°C). In the month of December, the average temperature dips to a freezing cold 23.9°F (-4.5°C) during the night.Humidity
In December, the average relative humidity in Monterey, Massachusetts, is 83%.Rainfall
In Monterey, Massachusetts, during December, the rain falls for 11.2 days and regularly aggregates up to 2.87" (73mm) of precipitation. In Monterey, during the entire year, the rain falls for 157.8 days and collects up to 31.69" (805mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Monterey, Massachusetts. In Monterey, in December, snow falls for 10 days, with typically accumulated 5.55" (141mm) of snow. In Monterey, during the entire year, snow falls for 55.3 days and aggregates up to 29.17" (741mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Monterey.On the first day of December, sunrise is at 7:02 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:30 pm EST.
Sunshine
In Monterey, the average sunshine in December is 4.3h.UV index
The month with the lowest UV index in Monterey is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold is it in Monterey in December?
What is the average humidity in December in Monterey?
How many days does it rain in December in Monterey?
How many days does it snow in December in Monterey?
What is the month with the shortest days in Monterey?
What is the average length of the day in December in Monterey?
When are sunrise and sunset in December in Monterey?
How long on average sun shines in December in Monterey?
What is the month with the lowest UV index in Monterey?
What is the UV index reading in December in Monterey?
Average temperature in December
Monterey, MA
- Average high temperature in December: 34.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Monterey, MA
- Average pressure in December: 30.06"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
Monterey, MA
- Average wind speed in December: 8mph
The windiest months (with the highest average wind speed) are January and March (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in December
Monterey, MA
- Average humidity in December: 83%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Monterey, MA
- Average rainfall in December: 2.87"
The wettest month (with the highest rainfall) is October (3.03").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in December
Monterey, MA
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in December
Monterey, MA
- Average snowfall in December: 5.55"
The month with the highest snowfall is February (6.89").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Monterey, MA
- Average snowfall days in December: 10 days
The month with the highest number of snowfall days is February (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Monterey, 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 12min).
- Average sunshine in December: 4h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in December
Monterey, MA
- Average sunshine days in December: 13.4 days
The months with the most sunshine days are September and November (15.5 days).
The month with the least sunshine days is February (11.1 days).
Average UV index in December
Monterey, MA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Monterey, MA
- Average cloud cover in December: 55
The month with the most cloud cover is February (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
Monterey, 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).
Monterey, Massachusetts, USA
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