December weather forecast
Monroe, CT

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Weather in December

December, the first month of the winter in Monroe, is also a wintry month, with temperature in the range of an average high of 39.9°F (4.4°C) and an average low of 29.7°F (-1.3°C).

Temperature

The onset of December brings a small change in high-temperatures, falling from a chilly 49.1°F (9.5°C) in November to a cold 39.9°F (4.4°C). Monroe's average low-temperature in December is measured at a freezing cold 29.7°F (-1.3°C).

Humidity

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

Rainfall

In Monroe, during December, the rain falls for 8.4 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Monroe, during the entire year, the rain falls for 118.8 days and collects up to 9.61" (244mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. December is the month with the most snowfall. Snow falls for 3.3 days and accumulates 0.55" (14mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
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 7:18 am and sunset at 4:33 pm EST.

Sunshine

In Monroe, the average sunshine in December is 4.8h.

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 value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the UV index of 2 transforms into the following advice:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

The high-temperature, in December, in Monroe, is 39.9°F (4.4°C), while the low-temperature averages to 29.7°F (-1.3°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in July is estimated at 87.8°F (31°C).

What is the average humidity in December?

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

How much does it rain in December?

In Monroe, in December, during 8.4 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

When does it snow the most?

The month with the most snowfall is December, when snow falls for 3.3 days and typically aggregates up to 0.55" (14mm) of snow.

How many days does it snow in December?

In Monroe, during December, snow falls for 3.3 days and regularly aggregates up to 0.55" (14mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 18min of daylight.

What is the average length of the day in December?

In Monroe, the average day length in December is 9h and 15min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 6:59 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:33 pm EST.

How many hours of sunshine does Monroe have in December?

In Monroe, the average sunshine duration in December is 4.8h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents 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
Monroe, CT

Average temperature in December - Monroe, CT
  • Average high temperature in December: 39.9°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in December: 29.7°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

Average pressure in December
Monroe, CT

Average pressure in December - Monroe, 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
Monroe, CT

Average wind speed in December - Monroe, CT
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in December
Monroe, CT

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

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (72%).

Average rainfall in December
Monroe, CT

Average rainfall in December - Monroe, CT
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is July (1.22").
The driest months (with the least rainfall) are January and February (0.47").

Average rainfall days in December
Monroe, CT

Average rainfall days in December - Monroe, CT
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in December
Monroe, CT

Average snowfall in December - Monroe, CT
  • Average snowfall in December: 0.55"

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

Average snowfall days in December
Monroe, CT

Average snowfall days in December - Monroe, CT
  • Average snowfall days in December: 3.3 days

The month with the highest number of snowfall days is February (5.8 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
Monroe, CT

Average daylight in December / Average sunshine in December - Monroe, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in December
Monroe, CT

Average sunshine days in December - Monroe, CT
  • Average sunshine days in December: 18.7 days

The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is July (13.9 days).

Average UV index in December
Monroe, CT

Average UV index in December - Monroe, 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
Monroe, CT

Average cloud cover in December - Monroe, CT
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in December
Monroe, CT

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

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

Monroe, Connecticut, USA

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