December weather forecast
Newtown, CT

Weather in December

December, the first month of the winter in Newtown, is still a cold month, with an average temperature ranging between min 29.3°F (-1.5°C) and max 39.6°F (4.2°C).

Temperature

In December, the average high-temperature drops from a frosty 48.7°F (9.3°C) in November to a cold 39.6°F (4.2°C). In Newtown, the average low-temperature is 29.3°F (-1.5°C).

Humidity

The average relative humidity in December in Newtown is 78%.

Rainfall

December is the month with the most rainfall in Newtown. Rain falls for 12 days and accumulates 4.02" (102mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 5.8 days. Throughout December, 3.58" (91mm) of snow is accumulated. In Newtown, during the entire year, snow falls for 34.5 days and aggregates up to 17.01" (432mm) of snow.

Daylight

The month with the shortest days in Newtown, Connecticut, is December, with an average of 9h and 14min of daylight.
On the first day of December in Newtown, sunrise is at 6:59 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:33 pm EST.

Sunshine

The average sunshine in December in Newtown is 4.7h.

UV index

The months with the lowest UV index in Newtown 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 minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 in December transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the temperature in December in Newtown?

The average high-temperature, in December, is 39.6°F (4.2°C), while the average low-temperature is 29.3°F (-1.5°C). in July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 87.8°F (31°C).

What is the average humidity in December in Newtown?

In Newtown, the average relative humidity in December is 78%.

What is the wettest month in Newtown?

December is the month with the most rainfall in Newtown. Rain falls for 12 days and accumulates 4.02" (102mm) of precipitation.

How many days does it rain in December in Newtown?

In December, in Newtown, the rain falls for 12 days. Throughout December, 4.02" (102mm) of precipitation is accumulated.

How much does it snow in Newtown in December?

In Newtown, during December, snow falls for 5.8 days and regularly aggregates up to 3.58" (91mm) of snow.

What is the month with the shortest days in Newtown?

With an average of 9h and 14min of daylight, December has the shortest days of the year in Newtown.

How many hours of daylight does Newtown have in December?

The average day length in December in Newtown is 9h and 14min.

What time are sunrise and sunset in December in Newtown?

On the first day of December, sunrise is at 6:59 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:33 pm EST.

How many hours of sunshine does Newtown have in December?

In December, the average sunshine duration in Newtown, Connecticut, is 4.7h.

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

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

What is the UV index reading in December in Newtown?

In December, the average daily maximum UV index in Newtown, Connecticut, 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
Newtown, CT

Average temperature in December - Newtown, CT
  • Average high temperature in December: 39.6°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

[Resources]

Average pressure in December
Newtown, CT

Average pressure in December - Newtown, 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).

[Resources]

Average wind speed in December
Newtown, CT

Average wind speed in December - Newtown, CT
  • Average wind speed in December: 8.1mph

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

[Resources]

Average humidity in December
Newtown, CT

Average humidity in December - Newtown, CT
  • Average humidity in December: 78%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (72%).

[Resources]

Average rainfall in December
Newtown, CT

Average rainfall in December - Newtown, CT
  • Average rainfall in December: 4.02"

The wettest month (with the highest rainfall) is December (4.02").
The driest months (with the least rainfall) are January and September (2.4").

[Resources]

Average rainfall days in December
Newtown, CT

Average rainfall days in December - Newtown, CT
  • Average rainfall days in December: 12 days

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is January (9.1 days).

[Resources]

Average snowfall in December
Newtown, CT

Average snowfall in December - Newtown, CT
  • Average snowfall in December: 3.58"

The month with the highest snowfall is February (4.37").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in December
Newtown, CT

Average snowfall days in December - Newtown, CT
  • Average snowfall days in December: 5.8 days

The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

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

Average daylight in December / Average sunshine in December - Newtown, CT
  • Average daylight in December: 9h and 14min

The month with the longest days is June (Average daylight: 15h and 7min).
The month with the shortest days is December (Average daylight: 9h and 14min).

  • Average sunshine in December: 4h and 42min

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 36min).

[Resources]

Average sunshine days in December
Newtown, CT

Average sunshine days in December - Newtown, CT
  • Average sunshine days in December: 14.1 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.1 days).

[Resources]

Average UV index in December
Newtown, CT

Average UV index in December - Newtown, 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).

[Resources]

Average cloud cover in December
Newtown, CT

Average cloud cover in December - Newtown, CT
  • Average cloud cover in December: 49

The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).

[Resources]

Average visibility in December
Newtown, CT

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

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location