January weather - Winter 2025

Weather in January
Frequently asked questions
Average temperature in January
Average pressure in January
Average wind speed in January
Average humidity in January
Average rainfall in January
Average rainfall days in January
Average snowfall in January
Average snowfall days in January
Average daylight in January
Average sunshine in January
Average sunshine days in January
Average UV index in January
Average cloud cover in January
Average visibility in January

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

Weather in January

January in Newton, Massachusetts presents as a decidedly frosty month, in the firm clutches of the New England winter. Thermometer readings can take a dip to an icy 21.7°F (-5.7°C) as a low, while a lukewarm 33.6°F (0.9°C) marks the high. Taking the month as a whole, the weather appears relatively static, with little variation initializing the calendar year. Cloud cover remains substantial across the month, influencing the subdued daylight. The new year promises a snowy start in Newton, with winter sports enthusiasts possibly finding conditions to their liking.

Temperature

Newton's temperature records reveal January as the coldest month, marked by average highs of 33.6°F (0.9°C) and lows of 21.7°F (-5.7°C).

Humidity

In January, the average relative humidity is 77%.

Rainfall

In Newton, in January, it is raining for 5.7 days, with typically 0.43" (11mm) of accumulated precipitation. In Newton, during the entire year, the rain falls for 85.9 days and collects up to 5.87" (149mm) of precipitation.

Snowfall

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

Daylight

In Newton, the average length of the day in January is 9h and 30min.
On the first day of January, sunrise is at 7:13 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 4:56 pm EST.

Sunshine

In January, the average sunshine is 5.2h.

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 value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A typical high UV index of 2 in January suggests the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. It's recommended to limit sun exposure when its radiation is at its peak during midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.

Updated: Jun 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

January stands out as Newton's coldest month, with an average high-temperature of 33.6°F (0.9°C) and a low-temperature of 21.7°F (-5.7°C).

How cold is it in Newton in January?

The average high-temperature and low-temperature during January are 33.6°F (0.9°C) and 21.7°F (-5.7°C) respectively.

What is the average humidity in January?

The average relative humidity in January is 77%.

How much does it rain in January?

In Newton, in January, it is raining for 5.7 days, with typically 0.43" (11mm) of accumulated precipitation.

How much does it snow in January?

In Newton, in January, during 4.9 snowfall days, 0.39" (10mm) of snow is typically accumulated.

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

The average day length in January is 9h and 30min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:13 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 4:56 pm EST.

How many hours of sunshine does Newton have in January?

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

What are the months with the lowest UV index?

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

How high is the UV index in January?

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

39.2°F 4°C

33.6°F 0.9°C

36.3°F 2.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.2mph 14.8km/h

9.7mph 15.6km/h

9.5mph 15.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

22.2

22.5

20.2

Average UV index

Average cloud cover

Average visibility

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).

Average pressure in January
Newton, 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
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).

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%).

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").

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).

Average snowfall in January
Newton, MA

Average snowfall in January: 0.39"

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

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).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Newton, 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 1min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in January
Newton, MA

Average sunshine days in January: 22.5 days

The 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).

Average UV index in January
Newton, 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
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).

Average visibility in January
Newton, MA

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).

January weather forecast
Newton, MA

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