January weather forecast
Bolton, MA

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Weather in January

January, the same as December, in Bolton, Massachusetts, is another subzero cold winter month, with an average temperature fluctuating between 19.8°F (-6.8°C) and 31.5°F (-0.3°C).

Temperature

In Bolton, the lowest average temperatures are observed in January, with a high of 31.5°F (-0.3°C) and a low of 19.8°F (-6.8°C).

Humidity

In January, the average relative humidity is 79%.

Rainfall

In Bolton, during January, the rain falls for 8.2 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, there are 150.4 rainfall days, and 28.86" (733mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Bolton, during January, snow falls for 8.7 days and regularly aggregates up to 4.06" (103mm) of snow. Throughout the year, there are 36.5 snowfall days, and 23.82" (605mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 29min.
On the first day of the month, sunrise is at 7:15 am and sunset at 4:23 pm. On the last day of January, sunrise is at 7:01 am and sunset at 4:58 pm EST.

Sunshine

The average sunshine in January is 5h.

UV index

The months with the lowest UV index in Bolton are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily high UV index of 2 in January leads to these guidelines:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

Bolton reaches its average lowest temperatures in January, measuring 31.5°F (-0.3°C) at the peak and 19.8°F (-6.8°C) at the lowest.

How cold is January?

Bolton in January has an average high-temperature of 31.5°F (-0.3°C) and an average low-temperature of 19.8°F (-6.8°C).

What is the average humidity in January?

In January, the average relative humidity is 79%.

How many days does it rain in January?

In Bolton, during January, the rain falls for 8.2 days and regularly aggregates up to 2.24" (57mm) of precipitation.

How many days does it snow in January?

In Bolton, in January, snow falls for 8.7 days, with typically accumulated 4.06" (103mm) of snow.

What is the average length of the day in January?

The average day length in January is 9h and 29min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:15 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 4:58 pm EST.

How long on average sun shines in January?

In Bolton, Massachusetts, the average sunshine duration in January is 5h.

What are the months 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 reading in January?

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe 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, MA

Average temperature in January - Bolton, MA
  • Average high temperature in January: 31.5°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in January: 19.8°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in January
Bolton, MA

Average pressure in January - Bolton, MA
  • Average pressure in January: 30.01"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in January
Bolton, MA

Average wind speed in January - Bolton, MA
  • Average wind speed in January: 8.6mph

The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in January
Bolton, MA

Average humidity in January - Bolton, MA
  • Average humidity in January: 79%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).

Average rainfall in January
Bolton, MA

Average rainfall in January - Bolton, MA
  • Average rainfall in January: 2.24"

The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in January
Bolton, MA

Average rainfall days in January - Bolton, MA
  • Average rainfall days in January: 8.2 days

The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (7.3 days).

Average snowfall in January
Bolton, MA

Average snowfall in January - Bolton, MA
  • Average snowfall in January: 4.06"

The month with the highest snowfall is February (6.1").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Bolton, MA

Average snowfall days in January - Bolton, MA
  • Average snowfall days in January: 8.7 days

The month with the highest number of snowfall days is February (9.4 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, MA

Average daylight in January / Average sunshine in January - Bolton, MA
  • 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 6min).

  • Average sunshine in January: 5h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in January
Bolton, MA

Average sunshine days in January - Bolton, MA
  • Average sunshine days in January: 16.5 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in January
Bolton, MA

Average UV index in January - Bolton, MA
  • Average UV index in January: 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 January
Bolton, MA

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

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in January
Bolton, MA

Average visibility in January - Bolton, MA
  • Average visibility in January: 5mi

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

Bolton, Massachusetts, USA

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