January weather forecast
Union, CT

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Weather in January

January, the same as December, in Union, Connecticut, is another subzero cold winter month, with an average temperature varying between 31.3°F (-0.4°C) and 19°F (-7.2°C).

Temperature

Union records the coldest temperatures in January, averaging a high of 31.3°F (-0.4°C) and a low of 19°F (-7.2°C).

Humidity

In January, the average relative humidity is 79%.

Rainfall

In January, in Union, the rain falls for 7.1 days. Throughout January, 2.13" (54mm) of precipitation is accumulated. Throughout the year, in Union, there are 148.3 rainfall days, and 29.21" (742mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Union, during January, snow falls for 8.5 days and regularly aggregates up to 3.19" (81mm) of snow. Throughout the year, there are 35.3 snowfall days, and 19.53" (496mm) of snow is accumulated.

Daylight

The average length of the day in January in Union is 9h and 32min.
On the first day of the month, sunrise is at 7:16 am and sunset at 4:27 pm. On the last day of January, sunrise is at 7:02 am and sunset at 5:01 pm EST.

Sunshine

In Union, Connecticut, the average sunshine in January 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 in Union. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 2 in January leads to these recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. 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. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What part of the year is the coldest in Union?

January is the coldest month, with an average high-temperature of 31.3°F (-0.4°C) and an average low-temperature of 19°F (-7.2°C).

How cold is January in Union?

In Union, 31.3°F (-0.4°C) is the average high-temperature and 19°F (-7.2°C) is the average low-temperature during January.

What is the average humidity in January in Union?

In January, the average relative humidity is 79%.

How much does it rain in Union in January?

In January, in Union, the rain falls for 7.1 days. Throughout January, 2.13" (54mm) of precipitation is accumulated.

How much does it snow in Union in January?

In Union, during January, snow falls for 8.5 days and regularly aggregates up to 3.19" (81mm) of snow.

What is the average length of the day in January in Union?

The average day length in January in Union is 9h and 32min.

When is the sunrise / sunset in January in Union?

In January, on the first day of the month, sunrise is at 7:16 am and sunset at 4:27 pm. On the last day of the month, in Union, sunrise is at 7:02 am and sunset at 5:01 pm EST.

How many hours of sunshine does Union have in January?

In January, the average sunshine duration is 4.8h.

When is the lowest UV index in Union?

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

What is the UV index intensity in January in Union?

The average daily maximum UV index in January in Union is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.
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 January
Union, CT

Average temperature in January - Union, CT
  • Average high temperature in January: 31.3°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in January: 19°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°F).

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Average pressure in January
Union, CT

Average pressure in January - Union, CT
  • Average pressure in January: 30.02"Hg

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

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Average wind speed in January
Union, CT

Average wind speed in January - Union, CT
  • Average wind speed in January: 8.8mph

The windiest months (with the highest average wind speed) are January and February (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in January
Union, CT

Average humidity in January - Union, CT
  • Average humidity in January: 79%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in January
Union, CT

Average rainfall in January - Union, CT
  • Average rainfall in January: 2.13"

The wettest month (with the highest rainfall) is July (2.76").
The driest month (with the least rainfall) is September (1.65").

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Average rainfall days in January
Union, CT

Average rainfall days in January - Union, CT
  • Average rainfall days in January: 7.1 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in January
Union, CT

Average snowfall in January - Union, CT
  • Average snowfall in January: 3.19"

The month with the highest snowfall is February (4.88").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Union, CT

Average snowfall days in January - Union, CT
  • Average snowfall days in January: 8.5 days

The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Union, CT

Average daylight in January / Average sunshine in January - Union, CT
  • Average daylight in January: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in January: 4h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

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Average sunshine days in January
Union, CT

Average sunshine days in January - Union, CT
  • Average sunshine days in January: 16.9 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (13.1 days).

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Average UV index in January
Union, CT

Average UV index in January - Union, CT
  • Average UV index in January: 2

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

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Average cloud cover in January
Union, CT

Average cloud cover in January - Union, CT
  • Average cloud cover in January: 48

The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 37).

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Average visibility in January
Union, CT

Average visibility in January - Union, CT
  • Average visibility in January: 5mi

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

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Union, Connecticut, USA

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