Climate and monthly weather forecastArlington, MA
Climate and monthly weather forecast
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 »Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, recording an average high temperature of 33.4°F (0.8°C) and a low temperature of 21.7°F (-5.7°C), is Arlington's coldest month.
In Arlington, during the entire year, the rain falls for 142.8 days and collects up to 27.36" (695mm) of precipitation.
Months with snowfall are January through May, October through December.
In Arlington, during the entire year, snow falls for 29.6 days and aggregates up to 17.8" (452mm) of snow.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
February is the most humid month, with an average relative humidity of 78%.
The month with the most snowfall is February, when snow falls for 6.8 days and typically aggregates up to 4.72" (120mm) of snow.
With an average of 4.7h of sunshine, February has the least sunshine of the year.
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.
April is the least humid month, with an average relative humidity of 70%.
In Arlington, Massachusetts, snow does not fall in June through September.
June has the longest days of the year, with an average of 15h and 12min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
July, with average temperatures reaching a high of 82°F (27.8°C) and a low of 64.4°F (18°C), is the warmest month.
The month with the most sunshine is August, with an average of 10.5h of sunshine.
The month with the least rainfall is September, when the rain falls for 10.7 days and typically collects 1.3" (33mm) of precipitation.
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.
December has the shortest days of the year, with an average of 9h and 6min of daylight.
Average temperature
Arlington, MA
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure
Arlington, MA
- Average pressure in January:
30.01"Hg - Average pressure in February:
29.99"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.03"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
Arlington, MA
- Average wind speed in January:
9.4mph - Average wind speed in February:
9.2mph - Average wind speed in March:
9mph - Average wind speed in April:
8.3mph - Average wind speed in May:
7.1mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
6mph - Average wind speed in August:
5.9mph - Average wind speed in September:
6.5mph - Average wind speed in October:
7.8mph - Average wind speed in November:
8.3mph - Average wind speed in December:
8.8mph
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).
Average humidity
Arlington, MA
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).
Average rainfall
Arlington, MA
- Average rainfall in January:
2.24" - Average rainfall in February:
2.24" - Average rainfall in March:
2.76" - Average rainfall in April:
2.83" - Average rainfall in May:
1.97" - Average rainfall in June:
2.13"
The wettest month (with the highest rainfall) is December (2.95").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days
Arlington, MA
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
8.5 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
10.7 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
9.5 days
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).
Average snowfall
Arlington, MA
- Average snowfall in January:
3.07" - Average snowfall in February:
4.72" - Average snowfall in March:
4.13" - Average snowfall in April:
0.91" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Arlington, MA
- Average snowfall days in January:
7.7 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
1.3 days - Average snowfall days in December:
5.5 days
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).
Average daylight / Average sunshine
Arlington, MA
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 6min
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 6min - Average sunshine in February:
4h and 42min - Average sunshine in March:
5h and 48min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 12min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 30min - Average sunshine in September:
8h and 30min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 54min
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
Arlington, MA
- Average sunshine days in January:
17.4 days - Average sunshine days in February:
14.5 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
14.2 days
- Average sunshine days in July:
14.2 days - Average sunshine days in August:
16.4 days - Average sunshine days in September:
17.4 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
17.6 days - Average sunshine days in December:
16.8 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is April (13.3 days).
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).
Average cloud cover
Arlington, 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
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).
