January weather forecast
Bolton, CT

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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

Notorious for its chilly winds, January in Bolton, Connecticut, USA presents itself with a classic winter tableau. The relatively high relative humidity of 76% often gives the cool air a biting edge, turning the chilly weather into freezing conditions sometimes. The temperatures often dip to lows around 21.2°F (-6°C) and only manage to reach highs of about 32.9°F (0.5°C), emphasizing the severity of the winter conditions. Even sunlight seems elusive during this month, as the days are short and often shrouded in clouds. Overall, January is a month of wintry whites and frosty breaths, with weather conditions that can test the resolve of even the hardiest weather enthusiasts.

Temperature

In Bolton, the lowest average temperatures are observed in January, with a high of 32.9°F (0.5°C) and a low of 21.2°F (-6°C).

Humidity

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

Rainfall

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

Snowfall

January through May, October through December are months with snowfall. In January, it is snowing for 7.8 days. Throughout January, 3.39" (86mm) of snow is accumulated. Throughout the year, there are 31.6 snowfall days, and 17.13" (435mm) of snow is accumulated.

Daylight

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

Sunshine

In January, the average sunshine is 5.1h.

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 of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 2 during January translates into the following directions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

In Bolton, the lowest temperatures are generally noted in January, averaging a high of 32.9°F (0.5°C) and a low of 21.2°F (-6°C).

How cold is it in January?

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

How many days does it rain in January?

In January, the rain falls for 10 days. Throughout January, 2.28" (58mm) of precipitation is accumulated.

How much does it snow in January?

In January, it is snowing for 7.8 days. Throughout January, 3.39" (86mm) of snow is accumulated.

How many hours of daylight does Bolton have in January?

The average day length in January is 9h and 34min.

When is the sunrise / sunset in January?

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 7:03 am and sunset at 5:03 pm EST.

How long on average sun shines in January?

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

What is the month with the lowest UV index?

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?

The average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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 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).

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).

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).

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%).

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").

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).

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").

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).

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 4min

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: 5h and 1min

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).

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).

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).

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).

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).

Bolton, Connecticut, USA

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