Last updated: February 24, 2025
Experience July in Boston, United States, where summer reaches its peak! This vibrant month showcases a maximum temperature of 33°C (91°F), with an average of 22°C (72°F), offering warm days perfect for outdoor exploration. However, the climate isn't without its challenges, as July also brings 127 mm (5.0 in) of precipitation over 15 days, resulting in a humidity level of 77%, creating a muggy atmosphere at times. Whether you're enjoying the sun or dodging summer showers, Boston's July weather provides a unique backdrop for unforgettable adventures.
In July, Boston experiences a surge in warmth, with average temperatures reaching a comfortable 22°C (72°F). The mercury often climbs, peaking at a toasty 33°C (91°F), making it one of the hottest months of the year. Nighttime brings milder conditions, with lows of 11°C (52°F) providing a pleasant reprieve from the day's heat. This month showcases a clear shift from the winter chill, marking a transition to the balmy summer days that draw locals and visitors alike to enjoy the city's vibrant outdoor scene. As temperatures rise, so does the energy of the city, with ample opportunities for festivals, beach outings, and alfresco dining under the sun.
In July, Boston experiences a notable surge in precipitation, with an average of 127 mm (5.0 in) falling over 15 days, making it the wettest month of the year. This significant uptick contrasts with the drier months of June, which recorded only 89 mm (3.5 in) over 12 days, and August, which tapers down to 85 mm (3.3 in) across 13 days. The rainy days in July contribute to the city’s lush summer foliage, yet the frequent showers may also catch residents off guard as they enjoy the lingering warm weather. This trend of increased rainfall in mid-summer aligns with typical patterns, as the heat tends to foster more storm activity in the region.
In July, Boston experiences a notable shift in humidity, dipping to 77%. This marks a continuation of the downward trend that began in June, where levels were slightly higher at 79%. The cooler spring months showcase a much different picture, with January and February boasting much higher humidity levels at 91%. As summer progresses into August, humidity further decreases to 72%, signaling a transition that suggests a more comfortable, albeit still humid, atmosphere for Bostonians. Overall, the data reveals a clear downward trajectory in humidity from the damp chill of winter, peaking in the height of summer before tapering off again in the early fall.
In Boston, July sees a peak UV Index of 10, maintaining the very high exposure category that characterized June. With a burn time of just 15 minutes, the potential for skin damage is significant, making sun protection crucial for outdoor activities. This intensity in the sun aligns with the trend observed from April through August, where the UV Index remains elevated, particularly in the summer months. As we transition into autumn, the UV Index begins to decrease, dropping to 8 in September, before heading further down into the moderate levels of fall and winter. For those interested in understanding UV exposure throughout the year, more detailed insights can be found at Boston UV Index.
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In July, Boston basks in the golden embrace of the sun, showcasing 338 hours of sunlight that mirrors the vibrancy of summer. This month, along with August, represents the pinnacle of sunny days, capturing the essence of the season as residents and visitors indulge in outdoor activities. The gradual rise in sunlight from January’s mere 91 hours to the peak in July reflects a remarkable transition, where nature awakens and flourishes under bright skies. Following the warmest months, the steady decrease into September's 293 hours signals the impending shift to fall, reminding us how fleeting these sun-drenched days can be. As the sunshine ebbs, it paints a picture of transition, evoking a sense of appreciation for those long, warm summer nights.
When considering the likelihood of sunny weather in July in Boston, historical data shows a notable trend as we progress into the summer months. With a 38% chance of sunshine, July is slightly below the peak months of May and June, which boast sunny probabilities of 44% and 45%, respectively. This suggests that while July remains a warm and generally favorable month for outdoor activities, it is not as consistently sunny as the early summer. As the city transitions into late summer, the odds of sunshine see a modest increase in August to 42%, indicating that sunshine remains an unpredictable companion during this time. Overall, July maintains a decent potential for sun but is part of a fluctuating pattern typical of Boston's summer climate.
As the summer sun graces Boston, July boasts an impressive 14 hours of daylight, providing ample opportunity for outdoor activities and leisurely evenings. Following the crescendo of daylight in June at 15 hours, July sees a slight dip but retains a charmingly abundant supply of sunlight. This month serves as a transitional point, as daylight begins to wane slightly, leading into the shorter days of August with 13 hours. The trend of steadily increasing daylight from the depths of winter culminates in these vibrant summer months, before the gradual descent back into shorter days starts in the late summer and early fall. As daylight hours shrink in the subsequent months, July stands as a bright reminder of the sun-filled days of summer in Boston.
In July, Boston experiences a notable dip in average wind speed, averaging just 3.0 m/s (7 mph). This marks a seasonal low following the more dynamic breezes of the spring months, where wind speeds peaked at 4.4 m/s (10 mph) in March. As the summer unfolds, the gentler winds become a familiar feature, contributing to the warm ambiance of the city but also foreshadowing the calmer days of August, which sees an even further decrease to 2.7 m/s (6 mph). This trend suggests a gradual transition into the sultry summer, where the wind's whisper takes a backseat to the heat, enhancing the overall leisurely vibe of Boston during this time.
The weather in Boston changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of July'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.
July and January present strikingly contrasting weather conditions. In July, temperatures range from a minimum of 11°C (52°F) to a maximum of 33°C (91°F), with an average of 22°C (72°F). The month is characterized by considerable humidity at 77% and a decent amount of rainfall, totaling 127 mm (5.0 in) over approximately 15 days. In stark contrast, January experiences much colder temperatures, ranging from a minimum of -21°C (-6°F) to a maximum of 17°C (63°F), with an average temperature of -3°C (27°F). Although precipitation is slightly lower at 87 mm (3.4 in) across 14 days, January has a higher humidity level of 91%. For a more detailed overview of winter conditions, you can explore Boston weather in January.
The weather in July and February presents a stark contrast, reflecting the extremes of seasonal change. In July, temperatures range from a mild 11°C (52°F) at night to a warm 33°C (91°F) during the day, with an average of 22°C (72°F). Despite experiencing 127 mm (5.0 in) of precipitation over 15 days, the humidity remains fairly high at 77%, contributing to a muggy atmosphere. In contrast, February brings a much colder environment, with temperatures dipping as low as -19°C (-2°F) and peaking at 20°C (69°F), averaging only -2°C (29°F). The month sees 90 mm (3.5 in) of precipitation across 16 days, accompanied by a higher humidity level at 91%, which can make the cold feel even more biting. For more insights on February's weather, you can check Boston weather in February.
July and March present stark contrasts in weather patterns. While July boasts warm temperatures with an average of 22°C (72°F) and highs reaching up to 33°C (91°F), March typically experiences a chillier climate, with an average of only 2°C (35°F) and lows plunging to -18°C (0°F). Additionally, July sees considerable rainfall, with 127 mm (5.0 in) over approximately 15 days, while March has less precipitation at 80 mm (3.2 in) across 13 days. Humidity levels are also notable; July's average humidity is 77%, whereas March is slightly higher at 88%. For more detailed information, check out Boston weather in March.
In comparing the weather of July and April, July is significantly warmer, with average temperatures ranging from a minimum of 11°C to a maximum of 33°C, while April starts off much cooler, with temperatures ranging from -5°C to a maximum of 28°C. Despite the warmer conditions in July, it experiences slightly higher precipitation, totaling 127 mm over 15 days, compared to April's 119 mm over the same number of days. Additionally, while July has a humidity level of 77%, April is notably more humid at 88%. For a more detailed look at what to expect in April, you can check out Boston weather in April.
July and May exhibit notable differences in weather patterns. July tends to be warmer, with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 33°C (91°F), while May's temperatures are cooler, with a minimum of -2°C (29°F) and an average of 14°C (58°F). Additionally, July experiences more precipitation overall, with 127 mm (5.0 in) falling over 15 days compared to May's 107 mm (4.2 in) over 14 days. Humidity is slightly lower in July at 77%, compared to May's 82%. For a detailed look at May's weather characteristics, you can check out Boston weather in May.
In comparing the weather between July and June, it is clear that July is generally warmer with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 33°C (91°F), compared to June's range of 5°C (42°F) to 32°C (90°F). Additionally, July experiences more precipitation, totaling 127 mm (5.0 in) over 15 days, while June has less with 89 mm (3.5 in) across 12 days. Humidity levels are slightly lower in July at 77% compared to 79% in June. For more specific details about June weather patterns, you can check Boston weather in June.
In July, the weather showcases a wider range of temperatures, with minimums reaching 11°C (52°F) and maximums peaking at 33°C (91°F), contributing to an average of 22°C (72°F). This month also experiences higher humidity levels at 77% and significant precipitation of 127 mm (5.0 in) over 15 days. In contrast, August features slightly cooler temperatures, with minimums dropping to 8°C (47°F) and maximums maxing out at 31°C (88°F), resulting in an average of 21°C (70°F). Additionally, August sees reduced precipitation at 85 mm (3.3 in) over 13 days and lower humidity levels at 72%. For a more detailed look at August's climate, you can visit Boston weather in August.
In July, the weather is characterized by warm temperatures, with average highs reaching 33°C (91°F) and a higher frequency of precipitation, totaling 127 mm over approximately 15 days. The humidity is noticeably elevated at 77%, contributing to a warm, often muggy atmosphere. In contrast, September brings cooler conditions with average temperatures dropping to 18°C (64°F), and the maximum temperature still reaching a pleasant 31°C (89°F). Precipitation decreases significantly to 76 mm over just 9 days, and humidity remains slightly lower at 76%. For a detailed look at what to expect, check out Boston weather in September.
In July, the weather is typically warm, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 33°C (91°F) and an average of 22°C (72°F). However, the month is also marked by significant rainfall, totaling 127 mm (5.0 in) over 15 days, coupled with relatively high humidity at 77%. In contrast, October experiences much cooler temperatures, with a minimum of 0°C (32°F), an average of 12°C (54°F), and a maximum of 29°C (84°F). Although October sees a slight increase in total precipitation to 134 mm (5.3 in) and slightly more rainy days at 16, humidity also rises to 83%. For more detailed information about the weather in October, you can visit Boston weather in October.
July and November exhibit stark contrasts in weather conditions. In July, temperatures range from a mild 11°C (52°F) at night to a scorching 33°C (91°F) during the day, with an average of 22°C (72°F). The month sees considerable rainfall, totaling 127 mm (5.0 in), falling over 15 days, accompanied by a relatively high humidity level of 77%. In contrast, November experiences much colder temperatures, with lows plummeting to -14°C (8°F) and highs reaching up to 25°C (77°F), averaging just 4°C (40°F). Although November has slightly less precipitation at 99 mm (3.9 in) over the same number of days, the humidity is notably higher at 88%. For a detailed look at Boston's November weather, check out Boston weather in November.
In July, the weather is characterized by a warm and humid climate, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 33°C (91°F) and an average of 22°C (72°F). The month experiences significant precipitation, totaling 127 mm (5.0 in) over about 15 days, accompanied by a humidity level of 77%. In contrast, December temperatures drop dramatically, with a minimum of -19°C (-2°F) and a maximum of 18°C (65°F), averaging around 0°C (33°F). This colder month sees less precipitation than July, with 105 mm (4.1 in) over 18 days, but higher humidity at 87%. For more specific details on December weather, visit Boston weather in December.
As July rolls into Boston, the city experiences a significant shift in weather compared to other months. The high temperatures reach a sweltering 33°C (91°F), making it the warmest month of the year, while the average temperature settles around a comfortable 22°C (72°F). However, it's not just the heat that defines July; this month also sees a rise in precipitation, with about 15 days experiencing rain, resulting in a total of 127 mm (5.0 in). The humidity level remains elevated at 77%, adding a sticky feel to the sultry air. Whether you’re enjoying outdoor activities or seeking refuge in air-conditioned venues, July's distinctive warmth and moisture set it apart from Boston's other months. For a deeper understanding of how temperature and precipitation patterns shape the city, check out Boston Climate.