December weather forecast
Plainfield, CT

Weather in December

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

Temperature

In December, the average high-temperature drops, from a chilly 49.1°F (9.5°C) in November, to a wintry 40.1°F (4.5°C). In December, the average low-temperature is 29.3°F (-1.5°C).

Humidity

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

Rainfall

The month with the most rainfall in Plainfield is December when the rain falls for 11.2 days and typically aggregates up to 3.39" (86mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall in Plainfield. In Plainfield, in December, during 4.9 snowfall days, 1.97" (50mm) of snow is typically accumulated. In Plainfield, during the entire year, snow falls for 29.7 days, and aggregates up to 12.99" (330mm) of snow.

Daylight

With an average of 9.2h of daylight, December has the shortest days of the year in Plainfield.

Sunshine

In Plainfield, Connecticut, the average sunshine is 4.9h.

UV index

Months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in December in Plainfield?

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

What is the wettest month in Plainfield?

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

How many days does it rain in December in Plainfield?

In December, in Plainfield, Connecticut, the rain falls for 11.2 days. Throughout December, 3.39" (86mm) of precipitation is accumulated.

How many days does it snow in December in Plainfield?

In December, in Plainfield, it is snowing for 4.9 days. Throughout December, 1.97" (50mm) of snow is accumulated.

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 9.2h of daylight.

How many hours of daylight does Plainfield have in December?

In Plainfield, Connecticut, the average length of the day in December is 9.2h.

How long on average sun shines in December in Plainfield?

In Plainfield, Connecticut, the average sunshine in December is 4.9h.

What is the month with the lowest UV index in Plainfield?

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

How high is the UV index in December in Plainfield?

In December, the average daily maximum UV index in Plainfield, Connecticut, is 2. A UV Index of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV radiation.

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).

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Average pressure in December
Plainfield, CT

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

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

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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).

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Average humidity in December
Plainfield, CT

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

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

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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").

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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).

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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").
Months with the least snowfall are June, July, August, September and October (0").

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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).
Months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Plainfield, CT
  • Average daylight in December: 9.2h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in December: 4.9h

Months with the most sunshine are July and August (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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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).

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Average UV index in December
Plainfield, CT

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

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

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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).

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Average visibility in December
Plainfield, CT

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

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

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