December weather forecast
Sherman, CT

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Weather in December

The first month of the winter, December, is also a wintry month in Sherman, Connecticut, with temperature in the range of an average low of 26.8°F (-2.9°C) and an average high of 37.9°F (3.3°C).

Temperature

The move into December indicates a reduction in the average high-temperature, down from November's chilly 47.8°F (8.8°C) to an icy 37.9°F (3.3°C). Nightly temperatures drop to an average low of 26.8°F (-2.9°C) in December.

Humidity

The average relative humidity in December is 80%.

Rainfall

In Sherman, in December, it is raining for 9.5 days, with typically 1.54" (39mm) of accumulated precipitation. In Sherman, during the entire year, the rain falls for 140.7 days and collects up to 17.56" (446mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 5.8 days and typically aggregates up to 1.46" (37mm) of snow.

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 7:01 am and sunset at 4:24 pm. On the last day of December, in Sherman, sunrise is at 7:20 am and sunset at 4:34 pm EST.

Sunshine

In December, the average sunshine in Sherman, Connecticut, is 4.5h.

UV index

December is the month with the lowest UV index in Sherman, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, an average UV index of 1 transforms into the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.

Frequently asked questions

Is it cold in Sherman during December?

The average high-temperature, in December, in Sherman, is 37.9°F (3.3°C), while the average low-temperature is 26.8°F (-2.9°C). In July, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 89.6°F (32°C).

What is the average humidity in December?

The average relative humidity in December is 80%.

How much does it rain in December?

In Sherman, in December, it is raining for 9.5 days, with typically 1.54" (39mm) of accumulated precipitation.

When does it snow the most?

The month with the most snowfall is December, when snow falls for 5.8 days and typically aggregates up to 1.46" (37mm) of snow.

How much does it snow in December?

In December, it is snowing for 5.8 days. Throughout December, 1.46" (37mm) of snow is accumulated.

What is the month with the shortest days?

December has the shortest days of the year in Sherman, with an average of 9h and 12min of daylight.

What is the average length of the day in December in Sherman?

The average day length in December is 9h and 13min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:34 pm EST.

How many hours of sunshine does Sherman have in December?

The average sunshine duration in December is 4.5h.

When is the lowest UV index?

December is the month with the lowest UV index, with an average maximum UV index of 1.

How high is the UV index in December?

The average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a low health threat 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
Sherman, CT

Average temperature in December - Sherman, CT
  • Average high temperature in December: 37.9°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32.4°F).

  • Average low temperature in December: 26.8°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

Average pressure in December
Sherman, CT

Average pressure in December - Sherman, 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
Sherman, CT

Average wind speed in December - Sherman, CT
  • Average wind speed in December: 7.2mph

The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Sherman, CT

Average humidity in December - Sherman, 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
Sherman, CT

Average rainfall in December - Sherman, CT
  • Average rainfall in December: 1.54"

The wettest month (with the highest rainfall) is July (2.24").
The driest month (with the least rainfall) is February (0.83").

Average rainfall days in December
Sherman, CT

Average rainfall days in December - Sherman, CT
  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is January (6.7 days).

Average snowfall in December
Sherman, CT

Average snowfall in December - Sherman, CT
  • Average snowfall in December: 1.46"

The month with the highest snowfall is December (1.46").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Sherman, CT

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

The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Sherman, CT
  • Average daylight in December: 9h and 1min

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 12min).

  • Average sunshine in December: 4h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

Average sunshine days in December
Sherman, CT

Average sunshine days in December - Sherman, CT
  • Average sunshine days in December: 16.4 days

The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is July (12.7 days).

Average UV index in December
Sherman, CT

Average UV index in December - Sherman, CT
  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Sherman, CT

Average cloud cover in December - Sherman, CT
  • Average cloud cover in December: 52

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 38).

Average visibility in December
Sherman, CT

Average visibility in December - Sherman, 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).

Sherman, Connecticut, USA

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