Climate and monthly weather forecast
Arlington, MA

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The climate of Arlington

Arlington, Massachusetts, USA is characterized by a Dfa type climate according to the Koppen Climate Classification. This is referred to as humid continental, indicating the region experiences considerable temperature variations throughout the year, with hot summers and no dry season. Situated in the heart of New England, Arlington's climatic patterns shift from mild, humid summers to cold, snowy winters with regular rainfall and no substantial dry spells.

Through the course of the year, Arlington sees average high temperatures fluctuating from 33.4°F (0.8°C) in the coldest month of January to 82°F (27.8°C) in the heat of July. On the other end, the average low temperatures register a significant change from 21.7°F (-5.7°C) in January to 64.4°F (18°C) during July. The relative humidity remains reasonably constant year-round, oscillating mildly between 70% and 78%.

Rainfall is a consistent feature of Arlington's climate. Precipitation typically ranges from 1.3" (33mm) in the driest month of September to 2.83" (72mm) during the wettest month of April. On the other hand, the town experiences an average of 10.3 to 15.3 days with some rainfall every month. The town sees a notable shift in sunshine hours, peaking at 10.5 hours during July and August, down to 4.7 hours in the darker month of February.

The best time to visit Arlington

The optimal time to visit Arlington varies depending on personal preferences and activities. Yet, for those looking to enjoy warm temperatures, extended daylight, and abundant sunshine, summer - from June to August - proves to be an excellent choice. During this period, average high temperature hovers at approximately 74.8°F (23.8°C) to 82°F (27.8°C), providing ideal conditions for recreational outdoor activities. Additionally, with sunshine hours peaking at 10.3 to 10.5 hours per day, longer days offer more room for exploration.

The worst time to visit Arlington

While there is no definitive 'worst time' to visit Arlington, visitors who are not fond of cold weather might find January and February challenging. These months record low average temperatures measuring from 21.7°F (-5.7°C) to 23°F (-5°C). Further, daylight hours are also at their shortest, with just over 9.5 hours per day in January. Snowfall is also prevalent during these months, with an average of 3.07" (78mm) and 4.72" (120mm), respectively.

Spring weather in Arlington

In Arlington, spring stretches from March to May. During this season, the town witnesses an upward trend in temperatures, rising from an average high of 43.3°F (6.3°C) in March to 66.7°F (19.3°C) in May. Correspondingly, average low temperature shows a considerable leap from 30°F (-1.1°C) in March to 49.6°F (9.8°C) in May. Rainfall also sees an increase, culminating at 2.83" (72mm) in April.

Summer weather in Arlington

Characterizing the Dfa climate type, Arlington's summers - ranging from June to August - are typically hot and humid. Average high temperatures progressively rise, nearly touching 82°F (27.8°C) in July. In contrast, average low temperatures also elevate, allowing for warm evenings with averages between 57°F (13.9°C) and 64.4°F (18°C). Rainfall decreases slightly in summer, with June witnessing 2.13" (54mm) precipitation.

Autumn weather in Arlington

Autumn descends on Arlington from September to November. The season sees a natural transition in weather as high temperatures gradually dip from 73°F (22.8°C) in September to 49.1°F (9.5°C) in November. Concurrently, average low temperature drops from 56.5°F (13.6°C) in September to 36.9°F (2.7°C) in November. Rainfall peaks in October, registering at 2.6" (66mm).

Winter weather in Arlington

Winter in Arlington is chilly and snowy, stretching from December to February. The months see a downswing in average high temperatures, hitting the yearly low of 33.4°F (0.8°C) in January. Average low temperatures also bottom out at 21.7°F (-5.7°C) in January. Snowfall becomes frequent in this period, with January and February experiencing 3.08" (78mm) and 4.72" (120mm) of snow respectively.

Weather in January

The Arlington, Massachusetts weather in January is characterized by cold temperatures and considerable snowfall. Being the first month of the year, temperatures somewhat dip from the previous month of December, setting a chilly start to the year. Weather in January »

Weather in February

In February, the weather in Arlington, Virginia leans towards the colder side similar to January, although increasing daylight hours hints at the impending spring. The month gets an additional 1.1 hours of daylight displaying the slow but sure journey towards warmer months. Weather in February »

Weather in March

As the season transitions from winter to spring, the weather in Arlington, Massachusetts in March starts showing signs of warming up. Temperatures moderately increase from February, providing a gradual introduction to spring. It's worth noting that compared to February, March endures a lesser amount of 4.13" (105mm) of snowfall, shedding the winter look. Weather in March »

Weather in April

April's weather in Arlington, Massachusetts is a true testament to the Spring season. The significant transition from the winter chill of March to warmer weather is felt as temperatures markedly rise. One of April's significant characteristics is the reduced snowfall, with measurements dropping drastically to only 0.91" (23mm). Weather in April »

Weather in May

Heading into May, Arlington, Massachusetts experiences further warming, rendering the weather considerably mild. With the growing temperatures, snowfall becomes quite negligible, further solidifying the transition from spring towards summer. Weather in May »

Weather in June

June declares the start of summer in Arlington, Massachusetts with increased temperatures and no snowfall. The shift from May's mild weather to warmer days becomes apparent, assuring the presence of summer. June is special in that it records no snowfall, further enhancing the sunny summer mood. Weather in June »

Weather in July

QJuly in Massachusetts harbors the peak of the summer weather with maximum temperature values being recorded. The transition from June to July reveals the continual rise in temperatures, setting the trend for the hottest month. July stands out with a near-perfect weather record, including the highest recorded temperature of 82°F (27.8°C). Weather in July »

Weather in August

August in Arlington, Massachusetts brings a gradual reduction in temperatures from the peak of July but maintains the summer warmth. A slide into cooler weather marks August, but the Riovg atmosphere remains predominantly sunny. Weather in August »

Weather in September

September in Arlington, Massachusetts signals the start of the fall season with a noticeable drop in temperatures from August. The cooling trend is carried from August, with September ushering in the richness of the autumn season. Weather in September »

Weather in October

October in Arlington, Massachusetts presents a substantial temperature decrease from September bringing in the autumn chill. Compared to September, the shift is unequivocally towards colder days, although long hours of daylight still exist. Weather in October »

Weather in November

As November unfolds in Arlington, Massachusetts, winter starts making its presence known with dropping temperatures. Since October, the weather takes a swift turn towards the cold, preparing for December's winter. An increase in rainfall to 2.68" (68mm) becomes evident, signaling November as a prelude to the wet winter season. Weather in November »

Weather in December

December in Arlington, Massachusetts features a full swing into winter, presenting cold temperatures and a surge in snowfall. Following November, an evident change towards lower temperatures ensures a chilly end to the year. December experiences an increased snowfall of 4.25" (108mm), marking the onset of winter. Weather in December »
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Frequently asked questions

What time of the year is the coldest in Arlington?

The coldest temperatures occur during January, when averages reach a peak of 33.4°F (0.8°C) and a low of 21.7°F (-5.7°C).

How much does it rain in Arlington?

Throughout the year, in Arlington, there are 142.8 rainfall days, and 27.36" (695mm) of precipitation is accumulated.

When does it snow in Arlington?

Months with snowfall are January through May, October through December.

How much does it snow in Arlington?

Throughout the year, in Arlington, Massachusetts, there are 29.6 snowfall days, and 17.8" (452mm) of snow is accumulated.

When is the lowest UV index in Arlington?

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

What is the most humid month in Arlington?

The most humid month in Arlington, Massachusetts, is February, with an average relative humidity of 78%.

When does it snow the most in Arlington?

February is the month with the most snowfall. Snow falls for 6.8 days and accumulates 4.72" (120mm) of snow.

What is the month with the least sunshine in Arlington?

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

When is Daylight Saving Time (DST) in Arlington?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Arlington, 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 in Arlington?

April is the least humid month, with an average relative humidity of 70%.

When it does not snow in Arlington?

June through September are months without snowfall.

When are the longest days in Arlington?

The month with the longest days is June, with an average of 15h and 12min of daylight.

What are the months with the highest UV index in Arlington?

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

What month is the hottest in Arlington?

Arlington's warmest month, July, registers temperatures that range from a high of 82°F (27.8°C) to a low of 64.4°F (18°C).

What month has the most sunshine in Arlington?

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

What is the driest month in Arlington?

September is the month with the least rainfall. Rain falls for 10.7 days and accumulates 1.3" (33mm) of precipitation.

What is the wettest month in Arlington?

The month with the most rainfall is December, when the rain falls for 9.5 days and typically aggregates up to 2.95" (75mm) of precipitation.

What is the month with the shortest days in Arlington?

December has the shortest days of the year in Arlington, with an average of 9h and 6min of daylight.

Average pressure
Arlington, MA

Average pressure - Arlington, MA

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

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Average wind speed
Arlington, MA

Average wind speed - Arlington, MA

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

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Average rainfall
Arlington, MA

Average rainfall - Arlington, MA

The wettest month (with the highest rainfall) is December (2.95").
The driest month (with the least rainfall) is September (1.3").

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Average rainfall days
Arlington, MA

Average rainfall days - Arlington, MA

The months with the highest number of rainy days are May and July (15.3 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall
Arlington, MA

Average snowfall - Arlington, MA

The month with the highest snowfall is February (4.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Arlington, MA

Average snowfall days - Arlington, MA

The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Arlington, MA

Average daylight / Average sunshine - Arlington, 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).

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Average sunshine days
Arlington, MA

Average sunshine days - Arlington, MA

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is April (13.3 days).

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Average UV index
Arlington, MA

Average UV index - Arlington, 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).

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Average visibility
Arlington, MA

Average visibility - Arlington, MA

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

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Arlington, Massachusetts, USA

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