June Weather in Boston, United States

Last updated: February 24, 2025

In June, Boston experiences a delightful transition into summer, characterized by maximum temperatures soaring to 32°C (90°F) and an average of 19°C (67°F). Visitors can expect mild nights, with minimum temperatures sometimes dipping to 5°C (42°F). Despite the warmth, humidity levels hover around a notable 79%, adding to the atmospheric charm. June also brings 89 mm (3.5 in) of rainfall across approximately 12 days, providing necessary hydration to the lush surroundings while ensuring an invigorating experience for all. Whether you're wandering the historic streets or enjoying the vibrant waterfront, Boston in June is a season of warmth and renewal.

June Temperature in Boston

In June, Boston experiences a delightful shift in temperatures as it fully embraces summer. The month begins with minimum temperatures around 5°C (42°F), gradually rising to an average of 19°C (67°F). This warming trend is complemented by maximum temperatures peaking at a sweltering 32°C (90°F), making it one of the warmest times of the year. This gradual rise from the cooler spring months signals a vibrant outdoor season, inviting residents and visitors alike to explore the city’s parks, waterfronts, and festivals. The contrast in temperatures from earlier months underscores the transition into warmer days, as Boston sheds its winter coat and welcomes sunshine and warmth.

June Weather in Boston: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Boston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec272935455866727064543932
Data source: Temperature data for Boston generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

June Precipitation in Boston

In June, Boston experiences a moderate level of precipitation, with 89 mm (3.5 in) of rain recorded over 12 days. This marks a slight decrease from the wetter months of April and May, where rainfall peaked at 119 mm (4.7 in) and 107 mm (4.2 in), respectively. As summer approaches, the frequency of rainy days tends to diminish, contrasting with the 14 rainy days seen in both May and earlier months. This trend of declining precipitation continues into July, which, despite having higher total rainfall at 127 mm (5.0 in), shares 15 rainy days. Thus, June serves as a transitional month in Boston’s climate, balancing between the heavier spring showers and the more sporadic summer storms on the horizon.

June Precipitation Trends in Boston

The chart displays monthly precipitation patterns in Boston, with values for each month alongside June's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec87908011910789127857613499105
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Boston

As summer approaches in Boston, the humidity begins to take a noticeable dip. In June, the humidity levels drop to 79%, marking a transition from the heavier, moisture-laden air of winter and early spring, which consistently hovered around 91% to 88%. This decline continues into July and August, when Boston experiences its lowest humidity of the year at 77% and 72%, respectively. The gradual decrease throughout the warmer months highlights a shift towards drier conditions, providing a welcome reprieve from the high humidity that characterizes the winter months. As summer unfolds, the trend indicates a more comfortable atmosphere for residents and visitors alike.

June Average Humidity in Boston

This chart illustrates the average monthly humidity levels in Boston, with June's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how June's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%88%88%82%80%77%72%76%83%88%87%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Boston

In June, Boston experiences a significant rise in the UV Index, peaking at 10, which categorizes it as very high. This marks a continuation of increasing levels from the previous months, with May's index at 9. Residents and visitors alike should be aware that the burn time dramatically shortens to just 15 minutes, emphasizing the need for sun protection during outdoor activities. As summer approaches, trends indicate a consistent demand for vigilance against UV exposure, especially as July maintains the same concerning levels. For those looking for detailed information on UV levels throughout the year, including June's stark warning, check out Boston UV Index.

Maximum UV Index Levels in Boston for June

The chart shows the monthly maximum UV Index (UVI) for Boston in June, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098642
Data source: Boston June UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

June Sunshine in Boston

As June arrives in Boston, the city basks in 337 hours of glorious sunshine, marking the peak of the year’s radiant embrace. This increase from May's 286 hours showcases a delightful upward trend as spring transitions into summer. The pattern is unmistakable; after a gradual rise from 91 hours in January to 232 hours in April, sunshine becomes a defining feature of the warmer months. July and August maintain this sunny momentum with 338 hours each, ensuring that residents and visitors alike can relish the long, sun-drenched days. With September seeing a slight dip to 293 hours, it rounds out a vibrant season that celebrates the joy of sunny days in New England.

Monthly Sunshine Duration in Boston: June Highlighted

The June sunshine duration represents the total number of hours Boston experiences direct sunlight during the month of June, excluding cloudy or obstructed periods. This chart compares the sunshine duration of June with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec91h140h219h232h286h337h338h338h293h199h151h104h
Data source: Boston June Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Boston During June

As June approaches in Boston, the probability of sunny weather experiences a notable uptick, reaching 45%—the highest point since the winter months. This positive trend follows a gradual increase from 14% in January to 44% in May, showcasing the arrival of summer and longer, sunnier days. While July brings a slight dip to 38% and August follows closely at 42%, June stands out as a month where residents can relish in brighter skies and warmer temperatures, making it an ideal time for outdoor activities and exploration.

Percentage of Sunny Days in June in Boston

The chart illustrates the percentage of sunny days in Boston throughout the year, with June highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Boston experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec14%21%43%39%44%45%39%42%41%29%33%21%
Data source: Boston June chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Boston in June

As the year unfolds in Boston, the transition into June marks a delightful peak in daylight duration, with an impressive 15 hours of sunshine illuminating the city. This increase from 14 hours in May highlights the arrival of summer, inviting longer days filled with outdoor activities and vibrant gatherings. Following June, daylight hours dip slightly in July, with 14 hours still providing ample time for enjoying the warm weather. However, as summer progresses, a gradual decline begins, illustrating the ebb and flow of daylight throughout the months. From the lengthy, sun-soaked days of late spring and early summer to the shorter, cozy days of fall, Boston's daylight trends beautifully encapsulate the rhythm of the seasons.

Average Daylight Hours in Boston for June

The chart illustrates the variation in daylight duration in Boston throughout the year, with June highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 25m10h 32m11h 57m13h 25m14h 39m15h 15m14h 55m13h 49m12h 26m10h 59m9h 43m9h 4m
Data source: Boston daylight hours, calculated by summing the hours between sunrise and sunset for each day.

June Winds in Boston

In June, Boston's winds typically pick up a gentle breeze, averaging 3.7 m/s (8 mph), slightly rebounding from the low of 3.2 m/s (7 mph) in May. This month marks a transition, where the winds are more consistent compared to the earlier spring months. While January through April feature fluctuating speeds, June's moderate winds create a pleasant atmosphere, perfect for outdoor activities. Interestingly, as summer approaches, June struggles to reach the higher wind speeds seen in the preceding winter months, with only a slight drop to 3.0 m/s (7 mph) in July, suggesting a trend of diminishing breezes as the summer heat takes hold. Overall, June serves as a delightful interlude with breezes that invite residents to revel in Boston's vibrant summer landscape.

Average June Wind Speed in Boston

The chart displays monthly wind speed patterns in Boston, with values for each month shown alongside June's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how June's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.54.04.43.73.23.7 m/s3.02.73.53.44.04.5
Data source: Boston June wind data, generated using information from the Copernicus Climate Change Service.

How June Weather in Boston Compares to Other Months

The weather in Boston changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of June's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Boston and find detailed weather information for every month.

June and January present stark contrasts in weather conditions. June enjoys mild to warm temperatures, ranging from a minimum of 5°C (42°F) to a maximum of 32°C (90°F), with an average of 19°C (67°F). During this month, precipitation is relatively moderate at 89 mm (3.5 in) over 12 days, alongside a humidity level of 79%. In contrast, January sees a much harsher climate, with temperatures plummeting to a minimum of -21°C (-6°F) and peaking at just 17°C (63°F), averaging -3°C (27°F). Precipitation is slightly lower at 87 mm (3.4 in) but occurs over a longer span of 14 days, coupled with high humidity levels at 91%. For a more detailed look at January weather, you can check Boston weather in January.

June and February present starkly contrasting weather conditions. In June, temperatures range from a chilly 5°C (42°F) at night to a warm average of 19°C (67°F), peaking at a hot 32°C (90°F) during the day. The month experiences around 89 mm (3.5 in) of precipitation over 12 days, while humidity sits at a comfortable 79%. In contrast, February is defined by frigid temperatures, with lows plunging to -19°C (-2°F) and an average of -2°C (29°F), despite a maximum of 20°C (69°F). Precipitation is slightly higher at 90 mm (3.5 in), but it occurs over more days, totaling 16, and with a higher humidity level of 91%. For more detailed insights, check out Boston weather in February.

When comparing the weather in June and March, it's evident that there is a significant contrast in temperatures and overall climate. In June, temperatures range from a chilly 5°C (42°F) at night to a warm 32°C (90°F) during the day, averaging around 19°C (67°F) with relatively high humidity at 79%. In contrast, March features much colder temperatures, with lows dipping to -18°C (0°F) and highs reaching a mild 22°C (72°F), averaging only 2°C (35°F). Precipitation levels are somewhat similar, with June receiving 89 mm (3.5 in) over about 12 days and March slightly less at 80 mm (3.2 in) across 13 days. For a more detailed look into the specifics of March weather, you can check out Boston weather in March. Overall, June offers a much warmer and more humid experience compared to the chillier conditions of March.

When comparing the weather in June and April, it's clear that June experiences warmer temperatures, with an average of 19°C (67°F) compared to April's cooler average of 7°C (45°F). While June sees a maximum temperature of 32°C (90°F), April's highs reach 28°C (82°F). However, April has slightly higher precipitation, with 119 mm (4.7 in) over 15 days, compared to June's 89 mm (3.5 in) over 12 days. Additionally, humidity levels are higher in April at 88% versus June's 79%. For more details, you can check the weather specifics here: Boston weather in April.

In comparing the weather between May and June, we observe a noticeable shift in temperatures and precipitation patterns. While May experiences a minimum temperature of -2°C (29°F) and an average of 14°C (58°F), June sees a rise, with a minimum of 5°C (42°F) and an average of 19°C (67°F). Both months share a maximum temperature of 32°C (90°F), indicating hot days in both periods. However, June has slightly less precipitation at 89 mm (3.5 in) over 12 days, compared to May's 107 mm (4.2 in) over 14 days. Humidity levels remain relatively high, with June at 79% and May at 82%. For those interested in more details, you can check out Boston weather in May.

In June, temperatures range from a minimum of 5°C (42°F) to a maximum of 32°C (90°F), with an average of 19°C (67°F). The month typically sees around 89 mm (3.5 in) of rainfall over 12 days, accompanied by a humidity level of 79%. In contrast, July offers slightly warmer conditions, with minimum temperatures rising to 11°C (52°F) and maximums reaching 33°C (91°F), averaging 22°C (72°F). However, July experiences more precipitation, totaling 127 mm (5.0 in) across 15 days, while humidity decreases slightly to 77%. For more detailed information, check out Boston weather in July.

June and August offer notable differences in weather patterns. In June, temperatures range from a chilly 5°C (42°F) at night to a warm 32°C (90°F) during the day, with an average temperature of 19°C (67°F). The month experiences around 89 mm (3.5 in) of precipitation over 12 days, contributing to a higher humidity level of 79%. In contrast, August presents slightly milder temperatures, with a minimum of 8°C (47°F), an average of 21°C (70°F), and a maximum of 31°C (88°F). Precipitation remains comparable at 85 mm (3.3 in) but occurs over a slightly longer period of 13 days, leading to reduced humidity levels at 72%. For more insights into the specifics of August weather, explore Boston weather in August.

June and September exhibit distinctly different weather patterns, though both months showcase mild summer conditions. In June, temperatures range from a minimum of 5°C (42°F) to a maximum of 32°C (90°F), with an average of 19°C (67°F), accompanied by higher humidity levels at 79% and 89 mm (3.5 in) of precipitation over 12 days. Conversely, September experiences slightly cooler temperatures, with a minimum of 3°C (38°F), an average of 18°C (64°F), and a maximum of 31°C (89°F). Precipitation is also less frequent, totaling 76 mm (3.0 in) over 9 days and with a humidity of 76%. For more information on weather specifics, you can check Boston weather in September.

In June, the weather tends to be warmer, with average temperatures around 19°C (67°F) and a maximum of 32°C (90°F), while October experiences cooler temperatures, averaging only 12°C (54°F) with a maximum of 29°C (84°F). Precipitation levels are also higher in October, with 134 mm (5.3 in) over 16 days compared to June's 89 mm (3.5 in) over 12 days. Humidity is relatively similar, with June at 79% and October slightly higher at 83%. Overall, the shift from the warmth and humidity of June to the cooler, wetter conditions in October reflects the changing seasons. For more detailed information, you can check Boston weather in October.

June and November showcase strikingly different weather patterns. In June, temperatures range from a mild 5°C (42°F) at night to a warm average of 19°C (67°F) and can reach highs of 32°C (90°F), accompanied by moderate humidity levels of 79% and 89 mm of precipitation spread over 12 days. In contrast, November experiences much colder conditions, with nighttime temperatures dropping to as low as -14°C (8°F), an average of just 4°C (40°F), and daytime highs reaching a maximum of 25°C (77°F). Precipitation slightly increases to 99 mm over 15 days, along with higher humidity at 88%. This stark contrast highlights the transition from the warm, humid days of early summer to the frigid, often damp conditions of late autumn. For more detailed insight, check out Boston weather in November.

June and December present starkly contrasting weather patterns. In June, temperatures range from a mild 5°C (42°F) at night to a warm 32°C (90°F) during the day, with an average of 19°C (67°F). Humidity is relatively high at 79%, but the month sees less rain, totaling 89 mm (3.5 in) over about 12 days. Conversely, December is much colder, with temperatures plummeting as low as -19°C (-2°F) and peaking at 18°C (65°F), averaging around 0°C (33°F). Precipitation increases slightly to 105 mm (4.1 in) over 18 days, and humidity rises to 87%, making the air feel quite frigid. For those interested in detailed weather conditions, you can find more information on Boston weather in December.

Compare Boston's Climate with Cities Worldwide

Conclusion: What to Expect From June Weather in Boston

As June unfolds in Boston, it marks a distinct transition into warmer and more vibrant weather compared to the cooler months preceding it. Temperatures rise significantly, with average highs reaching a comfortable 19°C, creating an inviting atmosphere for outdoor activities. Although the city experiences occasional rainfall, with about 12 days of precipitation, the overall humidity levels hover at a moderate 79%, adding a refreshing touch to the summer air. This shift not only revitalizes the city's landscape but also encourages locals and tourists alike to embrace the myriad of events and activities that Boston has to offer. For a deeper understanding of Boston's climate patterns, explore Boston Climate.