Climate and monthly 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

The climate of Brookline

Brookline, Massachusetts boasts a Humid continental climate, with no dry season and hot summers, as classified by the Köppen climate system (Dfa). This town in the northeastern United States experiences substantial seasonal variations in its weather conditions. A year in Brookline carries with it a wide spectrum of temperature changes ranging from a peak of around 81.9°F (27.7°C) in July down to a chilly 22.5°F (-5.3°C) in January. The fickle nature of the weather manifests in the shifting of the weather patterns.

Throughout the year, the average relative humidity wavers between 69% in April to 77% in January and February, indicating a fair amount of moisture in the air most times. Predominantly, the locality receives modest monthly rainfall from 0.2" (5mm) to 0.63" (16mm) keeping the region fairly hydrated. Snowfall, while not consistent, makes its appearance from November to April peaking at 0.71" (18mm) in December.

Sunshine is not in short supply in Brookline. Despite December bringing in the lowest sunshine duration of 4.9 hours, the sunniest month, July graces the town for around 10.2 hours. Daylight hours ebb and flow from a minimum of 9.1 hours in December to a substantial 15.2 hours in June, aligning with the seasonal cycles. Cloud cover varies across the spectrum from 32% in August to 50% in March showing clear skies ahead for most parts of the year. The wind speed remains relatively stable between 6.1mph (9.8km/h) in July to 9.5mph (15.3km/h) in January.

The best time to visit Brookline

With Brookline offering a potpourri of weather conditions, there is no "one size fits all" best time to visit. The suggestion would, therefore, hinge upon the visitor's favored weather conditions. Those partial to warmer weather will find June to August quite accommodating, with temperatures hovering from 66.7°F (19.3°C) to 81.9°F (27.7°C). During this time, daylight hours peak at a considerable 14.6 hours to 15.2 hours, maximizing outdoor activity time.

If a visitor expresses an inclination towards cooler weather, the late autumn months of November and December, or the early spring months of March and April present temperatures between 30.6°F (-0.8°C) and 49.5°F (9.7°C). It must be noted that a trip during these months could coincide with light snowfall or rain.

The worst time to visit Brookline

The colder months from December to February might pose a discomfort to those not inclined towards cooler temperatures. During this time, the average low temperature drops from 29.3°F (-1.5°C) to a frigid 22.5°F (-5.3°C). This period also brings with it cloud cover of up to 50%, reducing the visibility and generally creating a gloomy ambiance.

Wind speeds peak during these months, going up to 9.5mph (15.3km/h) in January, which might add an extra pinch of cold to the winter air. Additionally, these months experience reduced daylight hours, allowing for less daylight to spend exploring the town.

Spring weather in Brookline

The spring months of March, April, and May see a gradual upswing of temperatures from 43.3°F (6.3°C) to 66.7°F (19.3°C). Rainfall also rises during these months, culminating at a high of 0.59" (15mm) in April. The high humidity levels signal a moist and wet spring.

The wind speed diminishes progressively during these months from 9.1mph (14.6km/h) to 7.2mph (11.6km/h), contributing to more enjoyable outdoor activities. Daylight hours also see steady growth, from 12 hours in March up to a lengthy 14.6 hours by May end, enhancing the opportunities for outdoor excursions.

Summer weather in Brookline

June to August signals summer in Brookline with temperatures scaling heights of 81.9°F (27.7°C) in July. Despite the heat, the humidity remains relatively stable - 74% to 73% - fostering a general sense of wetness. Rainfall decreases by August, dwindling to about 0.39" (10mm).

These months bask in lengthy daylight hours, from 14.6 hours to a high of 15.2 hours in June, proffering ample opportunity for outdoor activities. Summer also offers maximum sunshine hours, culminating at 10.2 hours in July, making the outdoors quite inviting.

Autumn weather in Brookline

Autumn, from September through November, ushers in a drop in temperatures, going from 72.9°F (22.7°C) down to a more manageable 49.5°F (9.7°C). While rainfall increases slightly, reaching 0.63" (16mm) in November, cloud cover also rises in comparison to summer months.

Daylight hours shorten incrementally between September and November, slipping from 12.5 hours to 9.8 hours. Despite the lessening sunshine hours, autumn remains a pleasant time to visit, especially for those who enjoy witnessing the changing foliage.

Winter weather in Brookline

Winters in Brookline, encompassing December through February, are characterized by the fall in temperatures, fluctuations between 39.6°F (4.2°C) to 22.5°F (-5.3°C). Snowfall makes its appearance in this season, peaking at 0.71" (18mm) in December. Despite minimal rainfall during this season, the level of humidity remains fairly high.

Daylight hours are considerably lower between 9.1 hours to 9.6 hours. This leads to curt days and longer nights, potentially limiting outdoor activities. The presence of cloud cover up to 50% brings about an overall gloominess. Despite its chilly demeanor, winter in Brookline also brings with it the beauty of snow-covered landscapes.

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. Weather in January »

Weather in February

February carries forward the frigidity of January, albeit with a slight uptick in temperatures. The temperature reaches a mildly improved average maximum of 36.5°F (2.5°C), taking off from the January's peak temperature of 33.8°F (1°C). Weather in February »

Weather in March

As Brookline moves into March, there is a noteworthy shift in the weather, hinting at the arrival of spring. The most significant transformation is evident in the average low temperature, rising to a gentler 30.6°F (-0.8°C) from the 23.4°F (-4.8°C) reported in February. Weather in March »

Weather in April

April in Brookline marks a definitive shift in weather, jumping away from the lingering cold of March. The maximum temperature witnesses a substantial hike, soaring to an inviting 55.6°F (13.1°C) from its preceding value of 43.3°F (6.3°C) in March. Weather in April »

Weather in May

May brings an air of warmth and vibrancy to Brookline, positioned neatly between the mild spring in April and summer. As the temperatures continue their upward trend, the highlight remains the daylight hours, extending up to 14.6 hours. Weather in May »

Weather in June

June sets the stage for summer in Brookline, with the thermometer often reaching up to 74.5°F (23.6°C). An uptick from the pleasant 66.7°F (19.3°C) in May, it is clear that summer is here in full swing. Longer sunshine hours contribute to warm days, although there is a perceptible decrease in overall daylight hours compared to May. Weather in June »

Weather in July

July is the warmest month for Brookline, characterized by the annual peak temperature of 81.9°F (27.7°C). Subtle differences from June, such as a shift in the UV index, and a minor reduction in wind speed, distinguish July. Despite the soaring temperature, life remains vibrant and bustling thanks to consistent pressure conditions. Weather in July »

Weather in August

August holds onto the heat of the summer, with the average highest temperature slightly dipping to 80.4°F (26.9°C) from July's 81.9°F (27.7°C). The reduction in humidity, coupled with an increase in daylight hours, brings forth noticeable atmospheric changes. Weather in August »

Weather in September

September in Brookline signals the advent of autumn, with subtle shifts in temperature and a perceptible drop in sunshine hours. The average highest temperature falls decently from 80.4°F (26.9°C) in August down to 72.9°F (22.7°C), hinting at the incoming fall. Weather in September »

Weather in October

October brings an unambiguous transformation to Brookline as autumn takes a firm hold. The decrease in temperature from 72.9°F (22.7°C) in September to a cooler 61.2°F (16.2°C), is the most striking way October discards the remnants of summer. Weather in October »

Weather in November

With November, Brookline begins to brace for winter, evident from the dropping temperatures. A marked drop in the average low temperature, from 47.7°F (8.7°C) in October to a chillier 37.4°F (3°C), confirms the looming winter. Weather in November »

Weather in December

December heralds the arrival of winter in Brookline with temperatures often plunging to an average low of 29.3°F (-1.5°C). A significant shift from the 37.4°F (3°C) in November, December is undoubtedly the coldest month. The scant daylight hours and consistent snowfall paint a tranquil winter picture. Weather in December »
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

Brookline reaches its average lowest temperatures in January, measuring 33.8°F (1°C) at the peak and 22.5°F (-5.3°C) at the lowest.

What are the most humid months?

January and February, with an average relative humidity of 77%, are most humid months.

How much does it rain?

In Brookline, Massachusetts, during the entire year, the rain falls for 81.8 days and collects up to 5.51" (140mm) of precipitation.

When does it snow in Brookline?

January through May, November and December are months with snowfall.

How much does it snow?

In Brookline, during the entire year, snow falls for 16.8 days and aggregates up to 2.4" (61mm) of snow.

What is the month with the lowest UV index?

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

What is the month with the least sunshine?

The month with the least sunshine is February, with an average of 4.7h of sunshine.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month?

The least humid month is April, with an average relative humidity of 69%.

When it does not snow?

June through October are months without snowfall.

When are the longest days?

With an average of 15h and 12min of daylight, June has the longest days of the year.

What is the month with the highest UV index?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the hottest time of year?

The temperatures reach their highest averages in July, with highs of 81.9°F (27.7°C) and lows of 64.6°F (18.1°C).

What month has the most sunshine?

With an average of 10.5h of sunshine, August has the most sunshine of the year.

What is the driest month?

September is the month with the least rainfall. Rain falls for 6.4 days and accumulates 0.2" (5mm) of precipitation.

What is the wettest month?

November is the month with the most rainfall. Rain falls for 4.7 days and accumulates 0.63" (16mm) of precipitation.

What is the snowiest month?

December is the month with the most snowfall. Snow falls for 2.7 days and accumulates 0.71" (18mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 6min of daylight.
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Long-term
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Average temperature
Brookline, MA

Average temperature - Brookline, MA

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).

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).

Average pressure
Brookline, MA

Average pressure - Brookline, MA

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

Average wind speed
Brookline, MA

Average wind speed - Brookline, MA

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).

Average humidity
Brookline, MA

Average humidity - Brookline, MA

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

Average rainfall
Brookline, MA

Average rainfall - Brookline, MA

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

Average rainfall days
Brookline, MA

Average rainfall days - Brookline, MA

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).

Average snowfall
Brookline, MA

Average snowfall - Brookline, MA

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

Average snowfall days
Brookline, MA

Average snowfall days - Brookline, MA

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).

Average daylight / Average sunshine
Brookline, MA

Average daylight / Average sunshine - Brookline, MA

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).

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
Brookline, MA

Average sunshine days - Brookline, MA

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

Average UV index
Brookline, MA

Average UV index - Brookline, MA

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
Brookline, MA

Average cloud cover - Brookline, MA

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
Brookline, MA

Average visibility - Brookline, MA

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).

Brookline, Massachusetts, USA

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