January weather forecast
Brookline, MA

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A small league field in Brookline, Massachusetts, overlooking bright yellow trees in the fall, behind the cityscape of Boston
A small league field in Brookline, Massachusetts, overlooking bright yellow trees in the fall, behind the cityscape of Boston

Weather in January

Brookline, Massachusetts greets the new year with cold, often snowy conditions. The stretch from December to January exhibits an increment in the average lowest temperature, transitioning to 22.5°F (-5.3°C) from a chilling 29.3°F (-1.5°C) in December. The potential for snowfall stays a constant, making a Winter Wonderland a relatively common sight, especially with visibility maintained consistently at 6 miles. Despite the shorter days of 9.5 daylight hours, the town manages to bask in 5.2 hours of sunshine. A robust winter jacket becomes a necessity during this month, given the biting cold and bouts of snowfall.

Temperature

January stands out as Brookline's coldest month, with temperatures ranging between an average high of 33.8°F (1°C) and a low of 22.5°F (-5.3°C).

Humidity

The months with the highest humidity are January and February, with an average relative humidity of 77%.

Rainfall

In Brookline, during January, the rain falls for 4.3 days and regularly aggregates up to 0.39" (10mm) of precipitation. In Brookline, during the entire year, the rain falls for 81.8 days and collects up to 5.51" (140mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. In January, it is snowing for 4.8 days. Throughout January, 0.35" (9mm) of snow is accumulated. In Brookline, during the entire year, snow falls for 16.8 days and aggregates up to 2.4" (61mm) of snow.

Daylight

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 in Brookline. 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 maximum daily UV index of 2 during January morphs into the following directions:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Frequently asked questions

What part of the year is the coldest in Brookline?

In Brookline, the lowest temperatures are generally noted in January, averaging a high of 33.8°F (1°C) and a low of 22.5°F (-5.3°C).

How cold is it in Brookline in January?

During January, Brookline experiences an average high-temperature of 33.8°F (1°C) and a low-temperature of 22.5°F (-5.3°C).

What are the most humid months in Brookline?

The months with the highest humidity in Brookline are January and February, with an average relative humidity of 77%.

What is the average humidity in January in Brookline?

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

How much does it rain in Brookline in January?

In Brookline, Massachusetts, during January, the rain falls for 4.3 days and regularly aggregates up to 0.39" (10mm) of precipitation.

How much does it snow in Brookline in January?

In January, it is snowing for 4.8 days. Throughout January, 0.35" (9mm) of snow is accumulated.

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

In January, the average day length in Brookline is 9h and 30min.

When are sunrise and sunset in January in Brookline?

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, in Brookline, sunrise is at 6:59 am and sunset at 4:56 pm EST.

How long on average sun shines in January in Brookline?

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

What are the months with the lowest UV index in Brookline?

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

What is the UV index intensity in January in Brookline?

In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation.
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
Brookline, MA

Average temperature in January - Brookline, MA
  • Average high temperature in January: 33.8°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 (33.8°F).

  • Average low temperature in January: 22.5°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in January
Brookline, MA

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

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in January
Brookline, MA

Average wind speed in January - Brookline, MA
  • Average wind speed in January: 9.5mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in January
Brookline, MA

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

The months with the highest relative humidity are January and February (77%).
The month with the lowest relative humidity is April (69%).

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Average rainfall in January
Brookline, MA

Average rainfall in January - Brookline, MA
  • Average rainfall in January: 0.39"

The wettest month (with the highest rainfall) is November (0.63").
The driest month (with the least rainfall) is September (0.2").

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Average rainfall days in January
Brookline, MA

Average rainfall days in January - Brookline, MA
  • Average rainfall days in January: 4.3 days

The month with the highest number of rainy days is July (9.6 days).
The month with the least rainy days is January (4.3 days).

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Average snowfall in January
Brookline, MA

Average snowfall in January - Brookline, MA
  • Average snowfall in January: 0.35"

The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
Brookline, MA

Average snowfall days in January - Brookline, MA
  • Average snowfall days in January: 4.8 days

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in January /
Average sunshine in January
Brookline, MA

Average daylight in January / Average sunshine in January - Brookline, 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).

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Average sunshine days in January
Brookline, MA

Average sunshine days in January - Brookline, MA
  • Average sunshine days in January: 23.5 days

The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is June (17.4 days).

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Average UV index in January
Brookline, MA

Average UV index in January - Brookline, 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).

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Average cloud cover in January
Brookline, MA

Average cloud cover in January - Brookline, 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 32).

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Average visibility in January
Brookline, MA

Average visibility in January - Brookline, 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).

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Brookline, Massachusetts, USA

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