December weather forecast
East Haven, CT

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Weather in December

In December, East Haven finally embraces the winter season in full swing, as the temperatures settle between 41.7°F (5.4°C) and 32.4°F (0.2°C). As the snowflakes start to grace the town, December adds aesthetic value to the overall landscape. Shorter daylight hours and the onset of winter fog characterize this month's end condition. With winter festivities around the corner, the freezing East Haven temperatures and enchanting snow become part and parcel of the December scene.

Temperature

As December begins, there is a decrease in the average high-temperature, falling from a cool 50.7°F (10.4°C) in November to an icy 41.7°F (5.4°C). Throughout December, an average low-temperature of 32.4°F (0.2°C) is experienced.

Humidity

The average relative humidity in December in East Haven, Connecticut, is 75%.

Rainfall

In East Haven, in December, during 9.1 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. In East Haven, during the entire year, the rain falls for 112.8 days and collects up to 9.8" (249mm) of precipitation.

Snowfall

January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 2.7 snowfall days, it receives 0.31" (8mm) of snow. Throughout the year, there are 16.3 snowfall days, and 1.54" (39mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of December in East Haven, sunrise is at 6:58 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:32 pm EST.

Sunshine

The average sunshine in December is 4.9h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 2 during December translates into these guidelines:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.

Frequently asked questions

How cold does it get in December?

In East Haven, in December, the average high-temperature is 41.7°F (5.4°C), and the average low-temperature is 32.4°F (0.2°C).

What is the average humidity in December?

In December, the average relative humidity is 75%.

How many days does it rain in December?

In East Haven, in December, during 9.1 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

When does it start to snow?

December is the first month it typically snows. Throughout December, in the average 2.7 snowfall days, it receives 0.31" (8mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

How many hours of daylight does East Haven have in December?

In December, the average day length is 9h and 16min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 6:58 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:32 pm EST.

How many hours of sunshine does East Haven have in December?

In East Haven, the average sunshine duration in December is 4.9h.

When is the lowest UV index in East Haven?

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

How high is the UV index in December?

In East Haven, 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
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
East Haven, CT

Average temperature in December - East Haven, CT
  • Average high temperature in December: 41.7°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in December: 32.4°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

Average pressure in December
East Haven, CT

Average pressure in December - East Haven, 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
East Haven, CT

Average wind speed in December - East Haven, CT
  • Average wind speed in December: 10.1mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in December
East Haven, CT

Average humidity in December - East Haven, CT
  • Average humidity in December: 75%

The month with the highest relative humidity is June (77%).
The month with the lowest relative humidity is April (72%).

Average rainfall in December
East Haven, CT

Average rainfall in December - East Haven, CT
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is July (1.14").
The driest months (with the least rainfall) are January and September (0.51").

Average rainfall days in December
East Haven, CT

Average rainfall days in December - East Haven, CT
  • Average rainfall days in December: 9.1 days

The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is January (6.2 days).

Average snowfall in December
East Haven, CT

Average snowfall in December - East Haven, CT
  • Average snowfall in December: 0.31"

The month with the highest snowfall is March (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December
East Haven, CT

Average snowfall days in December - East Haven, CT
  • Average snowfall days in December: 2.7 days

The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
East Haven, CT

Average daylight in December / Average sunshine in December - East Haven, CT
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
East Haven, CT

Average sunshine days in December - East Haven, CT
  • Average sunshine days in December: 19.3 days

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is August (16.3 days).

Average UV index in December
East Haven, CT

Average UV index in December - East Haven, 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
East Haven, CT

Average cloud cover in December - East Haven, CT
  • Average cloud cover in December: 48

The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in December
East Haven, CT

Average visibility in December - East Haven, CT
  • Average visibility in December: 6mi

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

East Haven, Connecticut, USA

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