January weather forecast
Bolton, CT

Grass, brown sand, and trees on an empty beach in Bolton, Connecticut, overlooking the blue waters far out
Grass, brown sand, and trees on an empty beach in Bolton, Connecticut, overlooking the blue waters far out

Weather in January

January, the same as December, is a wintry winter month in Bolton, Connecticut, with an average temperature varying between 32.9°F (0.5°C) and 21.2°F (-6°C).

Temperature

The coldest month is January, with an average high-temperature of 32.9°F (0.5°C) and an average low-temperature of 21.2°F (-6°C).

Humidity

In January, the average relative humidity is 76%.

Rainfall

In January, the rain falls for 10 days. Throughout January, 2.28" (58mm) of precipitation is accumulated. Throughout the year, in Bolton, there are 164.8 rainfall days, and 31.77" (807mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Bolton, Connecticut, during January, snow falls for 7.8 days and regularly aggregates up to 3.39" (86mm) of snow. Throughout the year, there are 31.6 snowfall days, and 17.13" (435mm) of snow is accumulated.

Daylight

In January, the average length of the day in Bolton is 9h and 34min.
On the first day of January in Bolton, Connecticut, sunrise is at 7:16 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:03 pm EST.

Sunshine

In January, the average sunshine in Bolton is 5.1h.

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 estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 2 in January transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Bolton?

January is the coldest month in Bolton, with an average high-temperature of 32.9°F (0.5°C) and an average low-temperature of 21.2°F (-6°C).

What is the temperature in January in Bolton?

In January, in Bolton, the average high-temperature is 32.9°F (0.5°C), and the average low-temperature is 21.2°F (-6°C).

What is the average humidity in January in Bolton?

In Bolton, Connecticut, the average relative humidity in January is 76%.

How many days does it rain in January in Bolton?

In Bolton, in January, it is raining for 10 days, with typically 2.28" (58mm) of accumulated precipitation.

How many days does it snow in January in Bolton?

In Bolton, in January, snow falls for 7.8 days, with typically accumulated 3.39" (86mm) of snow.

How many hours of daylight does Bolton have in January?

In January, the average day length is 9h and 34min.

What time are sunrise and sunset in January in Bolton?

In January, on the first day of the month, sunrise is at 7:16 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:03 pm EST.

How many hours of sunshine does Bolton have in January?

In Bolton, Connecticut, the average sunshine duration in January is 5.1h.

When is the lowest UV index in Bolton?

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

How high is the UV index in January in Bolton?

The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Bolton, CT

Average temperature in January - Bolton, CT
  • Average high temperature in January: 32.9°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in January: 21.2°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

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Average pressure in January
Bolton, CT

Average pressure in January - Bolton, CT
  • Average pressure in January: 30.03"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).

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Average wind speed in January
Bolton, CT

Average wind speed in January - Bolton, CT
  • Average wind speed in January: 8.1mph

The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in January
Bolton, CT

Average humidity in January - Bolton, CT
  • Average humidity in January: 76%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in January
Bolton, CT

Average rainfall in January - Bolton, CT
  • Average rainfall in January: 2.28"

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in January
Bolton, CT

Average rainfall days in January - Bolton, CT
  • Average rainfall days in January: 10 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (10 days).

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Average snowfall in January
Bolton, CT

Average snowfall in January - Bolton, CT
  • Average snowfall in January: 3.39"

The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Bolton, CT

Average snowfall days in January - Bolton, CT
  • Average snowfall days in January: 7.8 days

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

Average daylight in January / Average sunshine in January - Bolton, CT
  • Average daylight in January: 9h and 34min

The month with the longest days is June (Average daylight: 15h and 10min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in January: 5h and 6min

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 36min).

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Average sunshine days in January
Bolton, CT

Average sunshine days in January - Bolton, CT
  • Average sunshine days in January: 17 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (11.2 days).

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Average UV index in January
Bolton, CT

Average UV index in January - Bolton, 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
Bolton, CT

Average cloud cover in January - Bolton, CT
  • Average cloud cover in January: 45

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in January
Bolton, CT

Average visibility in January - Bolton, CT
  • Average visibility in January: 6mi

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

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