December weather forecast
Morris, CT

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Weather in December

December, the first month of the winter in Morris, is also an icy month, with temperature in the range of an average high of 37.2°F (2.9°C) and an average low of 26.4°F (-3.1°C).

Temperature

The arrival of December indicates a decrease in the average high-temperature, moving from a chilly 47.5°F (8.6°C) in November to an icy 37.2°F (2.9°C). Morris witnesses a consistent average low-temperature of 26.4°F (-3.1°C) throughout December.

Humidity

In Morris, the average relative humidity in December is 80%.

Rainfall

December is the month with the most rainfall. Rain falls for 10.8 days and accumulates 3.62" (92mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Morris, during December, snow falls for 7.4 days and regularly aggregates up to 3.94" (100mm) of snow. Throughout the year, there are 39.4 snowfall days, and 24.37" (619mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 7:00 am and sunset at 4:23 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:32 pm EST.

Sunshine

The average sunshine in December is 4.6h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during December leads to these advisories:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

In Morris, 37.2°F (2.9°C) is the average high-temperature and 26.4°F (-3.1°C) is the average low-temperature during December. In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is computed to be 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 80%.

What is the wettest month?

December is the month with the most rainfall in Morris. Rain falls for 10.8 days and accumulates 3.62" (92mm) of precipitation.

How much does it rain in December?

In Morris, in December, during 10.8 rainfall days, 3.62" (92mm) of precipitation is typically accumulated.

How much does it snow in December?

In Morris, during December, snow falls for 7.4 days and regularly aggregates up to 3.94" (100mm) of snow.

What is the month with the shortest days?

The month with the shortest days in Morris is December, with an average of 9h and 12min of daylight.

How many hours of daylight does Morris have in December?

In Morris, the average day length in December is 9h and 13min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:00 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:32 pm EST.

How many hours of sunshine does Morris have in December?

The average sunshine duration in December is 4.6h.

What are the months with the lowest UV index?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December?

In Morris, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Morris, CT

Average temperature in December - Morris, CT
  • Average high temperature in December: 37.2°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in December: 26.4°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in December
Morris, CT

Average pressure in December - Morris, CT
  • 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
Morris, CT

Average wind speed in December - Morris, CT
  • Average wind speed in December: 7.7mph

The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in December
Morris, CT

Average humidity in December - Morris, CT
  • Average humidity in December: 80%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (73%).

Average rainfall in December
Morris, CT

Average rainfall in December - Morris, CT
  • Average rainfall in December: 3.62"

The wettest month (with the highest rainfall) is December (3.62").
The driest month (with the least rainfall) is September (2.24").

Average rainfall days in December
Morris, CT

Average rainfall days in December - Morris, CT
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is June (17.7 days).
The months with the least rainy days are January and February (8.1 days).

Average snowfall in December
Morris, CT

Average snowfall in December - Morris, CT
  • Average snowfall in December: 3.94"

The month with the highest snowfall is February (6.1").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Morris, CT

Average snowfall days in December - Morris, CT
  • Average snowfall days in December: 7.4 days

The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Morris, CT

Average daylight in December / Average sunshine in December - Morris, CT
  • 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days in December
Morris, CT

Average sunshine days in December - Morris, CT
  • Average sunshine days in December: 15 days

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (10.5 days).

Average UV index in December
Morris, CT

Average UV index in December - Morris, CT
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Morris, CT

Average cloud cover in December - Morris, CT
  • Average cloud cover in December: 50

The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 36).

Average visibility in December
Morris, CT

Average visibility in December - Morris, CT
  • Average visibility in December: 5mi

The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).

Morris, Connecticut, USA

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