December weather forecast
Plainfield, CT

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Weather in December

The first month of the winter, December, is still a cold month in Plainfield, Connecticut, with temperature in the range of an average low of 29.3°F (-1.5°C) and an average high of 40.1°F (4.5°C).

Temperature

Plainfield's December weather shows a moderate shift in high-temperatures, falling from November's frosty 49.1°F (9.5°C) to an icy 40.1°F (4.5°C). Throughout December, Plainfield witnesses a consistent average low-temperature of 29.3°F (-1.5°C).

Humidity

In December, the average relative humidity in Plainfield is 77%.

Rainfall

December is the month with the most rainfall. Rain falls for 11.2 days and accumulates 3.39" (86mm) of precipitation.

Snowfall

Months with snowfall in Plainfield are January through May, November and December. In December, it is snowing for 4.9 days. Throughout December, 1.97" (50mm) of snow is accumulated. Throughout the year, there are 29.7 snowfall days, and 12.99" (330mm) of snow is accumulated.

Daylight

The month with the shortest days in Plainfield is December, with an average of 9h and 12min of daylight.
On the first day of December in Plainfield, sunrise is at 6:55 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:27 pm EST.

Sunshine

The average sunshine in December is 4.9h.

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 estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the maximum UV index of 2 suggests this advice:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is December cold in Plainfield?

During December, Plainfield experiences an average high-temperature of 40.1°F (4.5°C) and a low-temperature of 29.3°F (-1.5°C). In July, the average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 86°F (30°C).

What is the average humidity in December in Plainfield?

The average relative humidity in December in Plainfield, Connecticut, is 77%.

What is the rainiest month in Plainfield?

December is the month with the most rainfall in Plainfield, Connecticut. Rain falls for 11.2 days and accumulates 3.39" (86mm) of precipitation.

How much does it rain in Plainfield in December?

In Plainfield, in December, it is raining for 11.2 days, with typically 3.39" (86mm) of accumulated precipitation.

How much does it snow in Plainfield in December?

In Plainfield, in December, snow falls for 4.9 days, with typically accumulated 1.97" (50mm) of snow.

What is the month with the shortest days in Plainfield?

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

How many hours of daylight does Plainfield have in December?

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

When are sunrise and sunset in December in Plainfield?

In December, on the first day of the month, sunrise is at 6:55 am and sunset at 4:18 pm. On the last day of the month, in Plainfield, sunrise is at 7:14 am and sunset at 4:27 pm EST.

How long on average sun shines in December in Plainfield?

In December, the average sunshine duration is 4.9h.

What are the months with the lowest UV index in Plainfield?

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

What is the UV index intensity in December in Plainfield?

In Plainfield, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe 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
Plainfield, CT

Average temperature in December - Plainfield, CT
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

Average pressure in December
Plainfield, CT

Average pressure in December - Plainfield, CT
  • Average pressure in December: 30.04"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Plainfield, CT

Average wind speed in December - Plainfield, CT
  • Average wind speed in December: 9mph

The windiest months (with the highest average wind speed) are January and March (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

Average humidity in December
Plainfield, CT

Average humidity in December - Plainfield, CT
  • Average humidity in December: 77%

The months with the highest relative humidity are February, June, July and September (79%).
The month with the lowest relative humidity is April (72%).

Average rainfall in December
Plainfield, CT

Average rainfall in December - Plainfield, CT
  • Average rainfall in December: 3.39"

The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in December
Plainfield, CT

Average rainfall days in December - Plainfield, CT
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Plainfield, CT

Average snowfall in December - Plainfield, CT
  • Average snowfall in December: 1.97"

The month with the highest snowfall is March (3.62").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Plainfield, CT

Average snowfall days in December - Plainfield, CT
  • Average snowfall days in December: 4.9 days

The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Plainfield, 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 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Plainfield, CT

Average sunshine days in December - Plainfield, CT
  • Average sunshine days in December: 15.6 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in December
Plainfield, CT

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

The months with the highest UV index are June, July and August (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
Plainfield, CT

Average cloud cover in December - Plainfield, CT
  • Average cloud cover in December: 47

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in December
Plainfield, CT

Average visibility in December - Plainfield, CT
  • Average visibility in December: 6mi

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

Plainfield, Connecticut, USA

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