January weather forecast
Boston, IN

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Weather in January

January, like December, in Boston, Indiana, is another cold winter month, with an average temperature ranging between min 20.8°F (-6.2°C) and max 32.5°F (0.3°C).

Temperature

January brings the lowest temperatures, with an average high of 32.5°F (0.3°C) and an average low of 20.8°F (-6.2°C).

Humidity

January and December, with an average relative humidity of 83%, are the most humid months.

Rainfall

In Boston, in January, it is raining for 8.1 days, with typically 1.57" (40mm) of accumulated precipitation. In Boston, during the entire year, the rain falls for 154.1 days and collects up to 23.74" (603mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Boston, Indiana, during January, snow falls for 9.2 days and regularly aggregates up to 1.93" (49mm) of snow. In Boston, Indiana, during the entire year, snow falls for 33.4 days and aggregates up to 9.37" (238mm) of snow.

Daylight

In Boston, the average length of the day in January is 9h and 44min.
On the first day of January, sunrise is at 8:00 am and sunset at 5:25 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:57 pm EST.

Sunshine

With an average of 3.7h of sunshine, January has the least sunshine of the year.

UV index

The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 2 in January translates into the following instructions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in Boston?

Boston's coldest month, January, generally records average temperatures ranging from a high of 32.5°F (0.3°C) to a low of 20.8°F (-6.2°C).

How cold is January in Boston?

In Boston, 32.5°F (0.3°C) is the average high-temperature and 20.8°F (-6.2°C) is the average low-temperature during January.

What are the most humid months?

January and December, with an average relative humidity of 83%, are most humid months.

What is the average humidity in January?

The average relative humidity in January is 83%.

How much does it rain in January?

In Boston, in January, it is raining for 8.1 days, with typically 1.57" (40mm) of accumulated precipitation.

How much does it snow in January?

In Boston, during January, snow falls for 9.2 days and regularly aggregates up to 1.93" (49mm) of snow.

How many hours of daylight does Boston have in January?

In Boston, the average day length in January is 9h and 44min.

What time are sunrise and sunset in January?

On the first day of January, sunrise is at 8:00 am and sunset at 5:25 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:57 pm EST.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 3.7h of sunshine.

How long on average sun shines in January?

In Boston, the average sunshine duration in January is 3.7h.

What is the month with the lowest UV index?

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in January?

The average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Boston, IN

Average temperature in January - Boston, IN
  • Average high temperature in January: 32.5°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in January: 20.8°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

Average pressure in January
Boston, IN

Average pressure in January - Boston, IN
  • Average pressure in January: 30.13"Hg

The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in January
Boston, IN

Average wind speed in January - Boston, IN
  • Average wind speed in January: 10.3mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

Average humidity in January
Boston, IN

Average humidity in January - Boston, IN
  • Average humidity in January: 83%

The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (75%).

Average rainfall in January
Boston, IN

Average rainfall in January - Boston, IN
  • Average rainfall in January: 1.57"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is November (1.5").

Average rainfall days in January
Boston, IN

Average rainfall days in January - Boston, IN
  • Average rainfall days in January: 8.1 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (7.4 days).

Average snowfall in January
Boston, IN

Average snowfall in January - Boston, IN
  • Average snowfall in January: 1.93"

The month with the highest snowfall is December (2.28").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
Boston, IN

Average snowfall days in January - Boston, IN
  • Average snowfall days in January: 9.2 days

The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Boston, IN

Average daylight in January / Average sunshine in January - Boston, IN
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 3h and 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in January
Boston, IN

Average sunshine days in January - Boston, IN
  • Average sunshine days in January: 15.1 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (9.8 days).

Average UV index in January
Boston, IN

Average UV index in January - Boston, IN
  • 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, October, November and December (UV index 2).

Average cloud cover in January
Boston, IN

Average cloud cover in January - Boston, IN
  • Average cloud cover in January: 62

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in January
Boston, IN

Average visibility in January - Boston, IN
  • Average visibility in January: 6mi

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

Boston, Indiana, USA

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