January weather forecast
Sunderland, MA

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Weather in January

January, the same as December, in Sunderland, Massachusetts, is a freezing cold winter month, with an average temperature fluctuating between 17.1°F (-8.3°C) and 29.7°F (-1.3°C).

Temperature

January is the month when Sunderland, Massachusetts, experiences its coldest temperatures, averaging a high of 29.7°F (-1.3°C) and a low of 17.1°F (-8.3°C).

Humidity

In Sunderland, the average relative humidity in January is 81%.

Rainfall

In January, the rain falls for 9.1 days. Throughout January, 2.32" (59mm) of precipitation is accumulated. Throughout the year, there are 147.7 rainfall days, and 28.9" (734mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Sunderland are January through May, October through December. In Sunderland, during January, snow falls for 10 days and regularly aggregates up to 5.47" (139mm) of snow. Throughout the year, there are 38.7 snowfall days, and 23.07" (586mm) 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 7:19 am and sunset at 4:27 pm. On the last day of January, sunrise is at 7:05 am and sunset at 5:02 pm EST.

Sunshine

The average sunshine in January in Sunderland is 5h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Sunderland. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 2 during January leads to these instructions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. During bright days, sunglasses that offer UVA and UVB defense are recommended. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Frequently asked questions

What month is the coldest in Sunderland?

With an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 17.1°F (-8.3°C), January is the coldest month in Sunderland, Massachusetts.

How cold is it in Sunderland in January?

The average high-temperature, in January, in Sunderland, is 29.7°F (-1.3°C), while the average low-temperature is 17.1°F (-8.3°C).

What is the average humidity in January in Sunderland?

In January, the average relative humidity in Sunderland is 81%.

How many days does it rain in January in Sunderland?

In Sunderland, Massachusetts, in January, during 9.1 rainfall days, 2.32" (59mm) of precipitation is typically accumulated.

How many days does it snow in January in Sunderland?

In January, it is snowing for 10 days. Throughout January, 5.47" (139mm) of snow is accumulated.

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

In January, the average day length is 9h and 29min.

What time are sunrise and sunset in January in Sunderland?

On the first day of January in Sunderland, sunrise is at 7:19 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:02 pm EST.

How long on average sun shines in January in Sunderland?

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

What is the month with the lowest UV index in Sunderland?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Sunderland, Massachusetts.

What is the UV index intensity in January in Sunderland?

In Sunderland, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health threat 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
Sunderland, MA

Average temperature in January - Sunderland, MA
  • Average high temperature in January: 29.7°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 (29.7°F).

  • Average low temperature in January: 17.1°F

The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in January
Sunderland, MA

Average pressure in January - Sunderland, MA
  • Average pressure in January: 30.03"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in January
Sunderland, MA

Average wind speed in January - Sunderland, MA
  • Average wind speed in January: 8.1mph

The windiest months (with the highest average wind speed) are January, February and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in January
Sunderland, MA

Average humidity in January - Sunderland, MA
  • Average humidity in January: 81%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in January
Sunderland, MA

Average rainfall in January - Sunderland, MA
  • Average rainfall in January: 2.32"

The wettest month (with the highest rainfall) is December (3.07").
The driest month (with the least rainfall) is September (1.69").

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Average rainfall days in January
Sunderland, MA

Average rainfall days in January - Sunderland, MA
  • Average rainfall days in January: 9.1 days

The month with the highest number of rainy days is April (15.3 days).
The month with the least rainy days is February (8.9 days).

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Average snowfall in January
Sunderland, MA

Average snowfall in January - Sunderland, MA
  • Average snowfall in January: 5.47"

The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Sunderland, MA

Average snowfall days in January - Sunderland, MA
  • Average snowfall days in January: 10 days

The month with the highest number of snowfall days is January (10 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
Sunderland, MA

Average daylight in January / Average sunshine in January - Sunderland, 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 July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in January
Sunderland, MA

Average sunshine days in January - Sunderland, MA
  • Average sunshine days in January: 16.3 days

The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is April (13.2 days).

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Average UV index in January
Sunderland, MA

Average UV index in January - Sunderland, MA
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in January
Sunderland, MA

Average cloud cover in January - Sunderland, MA
  • Average cloud cover in January: 47

The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in January
Sunderland, MA

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

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

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Sunderland, Massachusetts, USA

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