January weather forecast and climate
Newton, MA

Ancient historic buildings within the Union Historic District in Newton City, Massachusetts
Ancient historic buildings within the Union Historic District in Newton City, Massachusetts

Weather in January

January, like December, in Newton, Massachusetts, is another cold winter month, with average temperature ranging between max 33.6°F (0.9°C) and min 21.7°F (-5.7°C).

Temperature

The coldest month is January, with an average high-temperature of 33.6°F (0.9°C) and an average low-temperature of 21.7°F (-5.7°C).

Humidity

The average relative humidity in Newton is 77%.

Rainfall

In Newton, during 5.7 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. Throughout the year, there are 85.9 rainfall days, and 5.87" (149mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. In Newton, snow falls for 4.9 days, with typically accumulated 0.39" (10mm) of snow. In Newton, during the entire year, snow falls for 18.8 days, and aggregates up to 3.15" (80mm) of snow.

Daylight

In Newton, the average length of the day is 9.5h.

Sunshine

In January, the average sunshine is 5.2h.

UV index

Months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 2 interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Newton?

With an average high-temperature of 33.6°F (0.9°C) and an average low-temperature of 21.7°F (-5.7°C), January is the coldest month in Newton.

What is the average humidity in January in Newton?

In Newton, the average relative humidity in January is 77%.

How many days does it rain in January in Newton?

In Newton, during January, the rain falls for 5.7 days and regularly aggregates up to 0.43" (11mm) of precipitation.

How much does it snow in Newton in January?

In Newton, during January, snow falls for 4.9 days and regularly aggregates up to 0.39" (10mm) of snow.

How many hours of daylight does Newton have in January?

In Newton, Massachusetts, the average length of the day in January is 9.5h.

How many hours of sunshine does Newton have in January?

In January, the average sunshine in Newton, Massachusetts, is 5.2h.

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

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

What is the UV index reading in January in Newton?

The average daily maximum UV index in January in Newton is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to the UV radiation.

Average temperature in January
Newton, MA

Average temperature in January - Newton, MA
  • Average high temperature in January: 33.6°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 (33.6°F).

  • Average low temperature in January: 21.7°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

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Average pressure in January
Newton, MA

Average pressure in January - Newton, MA
  • Average pressure in January: 30.01"

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

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Average wind speed in January
Newton, MA

Average wind speed in January - Newton, MA
  • Average wind speed in January: 9.1mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in January
Newton, MA

Average humidity in January - Newton, MA
  • Average humidity in January: 77%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).

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Average rainfall in January
Newton, MA

Average rainfall in January - Newton, MA
  • Average rainfall in January: 0.43"

The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.24").

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Average rainfall days in January
Newton, MA

Average rainfall days in January - Newton, MA
  • Average rainfall days in January: 5.7 days

The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is February (4.1 days).

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Average snowfall in January
Newton, MA

Average snowfall in January - Newton, MA
  • Average snowfall in January: 0.39"

The month with the highest snowfall is December (0.91").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
Newton, MA

Average snowfall days in January - Newton, MA
  • Average snowfall days in January: 4.9 days

The month with the highest number of snowfall days is January (4.9 days).
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
Newton, MA

Average daylight in January / Average sunshine in January - Newton, MA
  • Average daylight in January: 9.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in January: 5.2h

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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Average sunshine days in January
Newton, MA

Average sunshine days in January - Newton, MA
  • Average sunshine days in January: 22.5 days

Months with the most sunshine days are January and November (22.5 days).
The month with the least sunshine days is June (17.5 days).

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Average UV index in January
Newton, MA

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

Months with the highest UV index are June, July and August (UV index 6).
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
Newton, MA

Average cloud cover in January - Newton, MA
  • Average cloud cover in January: 44

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in January
Newton, MA

Average visibility in January - Newton, MA
  • Average visibility in January: 6mi

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

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