Last updated: February 24, 2025
July in Boston, United States experiences a vibrant and dynamic climate, characterized by a maximum temperature soaring up to 34°C (94°F) and an average of 23°C (73°F), offering warm summer days perfect for outdoor activities. However, the month also brings its share of rain, with a total precipitation of 115 mm (4.5 in) spread over 12 days, contributing to a humid atmosphere with an average humidity level of 67%. This combination of warmth and occasional showers makes July a quintessential summer month in Boston, balancing sunshine with the refreshing touch of rain.
In July, Boston basks in its warmest weather of the year, showcasing a delightful transition from the cooler months. With minimum temperatures averaging around 14°C (57°F) and soaring to a maximum of 34°C (94°F), the summer heat envelops the city, encouraging residents and visitors alike to revel in outdoor activities. Average temperatures peak at 23°C (73°F), marking a vibrant atmosphere as parks and waterfronts come alive. This warm embrace stands in striking contrast to the frigid depths of winter seen in January, where minuscule temperatures plummet to -19°C (-3°F). July's warmth not only signifies the height of summer but also highlights a trend of steadily rising temperatures leading into the summer months, making it a pivotal time to enjoy Boston's rich offerings under the sun.
In July, Boston experiences a noticeable uptick in precipitation, with a total of 115 mm (4.5 in), making it one of the wetter months of the year. This figure reflects a consistent trend of increased rainfall compared to the preceding months, where June saw 86 mm and May recorded 94 mm. With precipitation occurring over an average of 12 days, July's weather often features short bursts of summer thunderstorms, contributing to its overall humidity. This month stands out not only for its higher precipitation amounts but also for demonstrating the city's transition into the warm, sometimes unpredictable patterns of late summer.
In Boston, United States, July marks a turning point in humidity trends, with a notable decrease to 67%. This dip follows the more humid months of January through June, where humidity levels remained significantly above 70%. While the summer typically brings warmer temperatures, July's relative comfort indicates a gradual shift towards drier conditions, paving the way for a slightly less oppressive August at 66%. As the year progresses, humidity levels begin to rise again in the fall months, hinting at the cyclical nature of New England’s weather patterns. Overall, July offers Bostonians a brief respite from the summer moisture, showcasing the city's dynamic climate.
In July, Boston experiences a UV Index of 9, maintaining its status in the very high exposure category. This indicates that residents and visitors alike should take significant precautions against harmful UV radiation, as the burn time is only 15 minutes for unprotected skin. Following a peak at June’s UV Index of 10, July remains intense, alongside August, which also holds a UV Index of 9. Interestingly, this mid-summer surge follows the more moderate levels seen from January to March, which only reached a UV Index of 3 and 5, respectively. As the summer progresses, it’s crucial to stay vigilant about sun safety practices. For more detailed information, check out Boston UV Index.
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In July, Boston basks in the warm embrace of 334 hours of sunshine, making it one of the sunniest months of the year. This delightful peak follows a steady ascent from June’s 327 hours, establishing a vibrant summer atmosphere that invites outdoor adventures and community gatherings. As the days grow longer and brighter, July not only stands out for its abundant sunlight but also marks the heart of a generally upward trend in hours of sunshine from the start of the year. The city's residents can relish the sunshine, as it heralds a season of warmth before the slightly reduced light returns in August, although still robust at 327 hours. The transition into summer reflects a joyful rhythm, with each month building anticipation for Boston's sun-drenched July days.
In Boston, July tends to bring a modest chance of sunny weather, with only 33% of days expected to be bright and clear. This figure marks a slight dip compared to earlier summer months, such as June (39%) and May (38%), suggesting that as the summer progresses, cloudier days may become more frequent. Interestingly, July's likelihood of sunshine contrasts with the higher percentages seen in the cooler months, particularly November (55%) and March (61%). Overall, while Boston's July may not be the sunniest of the year, it offers a pleasant summer ambiance, albeit with a higher chance of overcast skies as the month unfolds.
In Boston, United States, the daylight duration experiences a vibrant transformation throughout the year. Starting with a modest 9 hours in January, the days gradually lengthen as spring approaches, peaking at 15 hours in June. By July, Boston enjoys a generous 14 hours of daylight, creating perfect conditions for summer activities and outdoor gatherings. However, as summer wanes into August with 13 hours of daylight, the gradual decline continues into autumn, bringing 12 hours in September and 11 hours in October. This rhythmic ebb and flow of sunlight not only marks the changing seasons but also highlights the invigorating summer energy that encapsulates the city in July.
In July, Boston experiences its calmest winds of the year, with an average speed of just 3.2 m/s (7 mph). This gentle breeze, a stark contrast to the winter months where winds consistently reach speeds around 4.4 m/s (10 mph), brings a sense of ease to the sweltering summer heat. Interestingly, the wind starts its gradual decline after May, where it averages 3.9 m/s (9 mph), and this trend continues through the summer months into August, tracing a pattern of decreasing winds that reflects the city’s warmer climate. As summer wanes and September approaches, wind speeds pick back up slightly to 3.7 m/s (8 mph), hinting at the impending transition to autumn. This cyclical nature of wind patterns not only influences the weather but also shapes the vibrant outdoor atmosphere that defines Boston's lively summer season.
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 patterns. In July, temperatures range from a minimum of 14°C (57°F) to a scorching maximum of 34°C (94°F), with an average of 23°C (73°F). Despite its warmth, July sees about 115 mm (4.5 in) of precipitation over 12 days, with humidity at 67%. On the other hand, January plunges into the cold with temperatures varying from a frigid -19°C (-3°F) to a more moderate 19°C (67°F), averaging around 0°C (32°F). This winter month experiences less precipitation at 79 mm (3.1 in) over about 9 days, but the humidity is significantly higher at 86%. For more specific insights into Boston's winter conditions, check Boston weather in January.
July and February showcase starkly contrasting weather conditions. In July, temperatures range from a minimum of 14°C (57°F) to a scorching maximum of 34°C (94°F), with an average of 23°C (73°F). This summer month also experiences significant rainfall, with 115 mm (4.5 in) spread over 12 days, and a humidity level of 67%. In contrast, February is characterized by much colder temperatures, with lows dropping to -16°C (4°F) and an average of just 1°C (34°F), peaking at a maximum of 20°C (68°F). February sees slightly less precipitation at 97 mm (3.8 in) over 10 days, but a higher humidity level of 84%. For more details on February weather, you can check out Boston weather in February.
When comparing the weather in July and March, it's clear that the two months exhibit contrasting climates. July boasts much warmer temperatures, with an average of 23°C (73°F) and highs reaching up to 34°C (94°F), while March experiences a much cooler average of just 3°C (38°F) and a maximum of 20°C (68°F). Additionally, July is characterized by lower humidity levels at 67%, compared to March's higher 82%, which can make the colder month feel even chillier. Precipitation is similar in both months, with July receiving 115 mm over 12 days and March receiving 102 mm over 10 days. For a closer look at the specific weather patterns during March, you can check out Boston weather in March.
When comparing the weather in July and April, a stark contrast is evident in both temperature and humidity levels. July boasts a comfortable average temperature of 23°C (73°F) with highs reaching up to 34°C (94°F), while April's temperatures are significantly cooler, averaging just 9°C (48°F), peaking at 27°C (81°F). Both months experience a fair amount of precipitation, with July receiving 115 mm (4.5 in) over 12 days and April slightly higher at 135 mm (5.3 in) over 13 days. Additionally, humidity levels are higher in April at 80% compared to 67% in July, making for a more muggy atmosphere in the spring. For a more detailed look at April weather, check out Boston weather in April.
In comparing the weather between July and May, July showcases a significantly warmer overall climate with average temperatures around 23°C (73°F) compared to May's milder average of 14°C (58°F). The maximum temperature in July can reach up to 34°C (94°F), while May peaks at a comfortable 31°C (89°F). Despite higher temperatures, July also experiences more precipitation, averaging 115 mm (4.5 in) over 12 days, compared to May's 94 mm (3.7 in) during the same number of days. Humidity levels in July hover around 67%, slightly lower than May's 72%. For a closer look at what to expect in May, check out Boston weather in May.
In comparing the weather between June and July, July tends to be warmer overall, with an average temperature of 23°C (73°F) compared to June's 19°C (67°F). While July has a higher maximum temperature of 34°C (94°F), it also experiences increased precipitation, measuring 115 mm (4.5 in) over 12 days, compared to June's 86 mm (3.4 in) over 10 days. Additionally, humidity levels are slightly lower in July at 67%, versus 72% in June. For more details on weather trends, you can check out Boston weather in June.
In comparing the weather between July and August, we see some notable similarities and slight differences. Both months maintain an average temperature of 23°C (73°F), but July experiences a wider range of temperatures with a maximum of 34°C (94°F) compared to August's maximum of 33°C (92°F). July tends to be wetter, receiving 115 mm (4.5 in) of precipitation over 12 days, while August sees less rain at 76 mm (3.0 in) across 10 days. Additionally, humidity levels are quite similar, with July at 67% and August at 66%. Overall, while both months offer warm summer weather, August is characterized by slightly milder temperatures and reduced precipitation. For more insights on August's weather, you can explore Boston weather in August.
In July, the weather is typically warmer, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 34°C (94°F) and an average of 23°C (73°F). The month also experiences considerable rainfall, with 115 mm (4.5 in) over 12 days, contributing to a humidity level of 67%. In contrast, September sees cooler temperatures, with a minimum of 7°C (46°F) and an average of 19°C (67°F). Although the maximum temperature can still reach up to 33°C (92°F), the overall precipitation decreases to 92 mm (3.6 in) over just 8 days, resulting in a slightly higher humidity of 71%. For more details on September's climate, visit Boston weather in September.
In July, temperatures in Boston typically range from a cool 14°C (57°F) at night to a hot 34°C (94°F) during the day, with an average of 23°C (73°F). The month sees about 115 mm (4.5 in) of precipitation spread over 12 days and has a relatively moderate humidity level of 67%. In contrast, October brings a significant drop in temperatures, with a minimum of 0°C (33°F) and an average of 14°C (57°F), peaking at 27°C (81°F). Precipitation increases slightly to 149 mm (5.9 in), also over 12 days, accompanied by higher humidity at 78%. For more insights into what to expect, check out Boston weather in October.
July and November present a stark contrast in weather conditions. July sees warmer temperatures with a minimum of 14°C (57°F) and an average of 23°C (73°F), reaching a maximum of 34°C (94°F). In contrast, November features significantly cooler temperatures, with a minimum of -10°C (14°F) and an average of just 7°C (44°F). Precipitation levels are relatively close, with July receiving 115 mm (4.5 in) over 12 days, while November has slightly less at 100 mm (3.9 in) across 10 days. Additionally, humidity is higher in November at 84%, compared to July's 67%. For more details on the specifics of this month, see Boston weather in November.
July and December in Boston present striking contrasts in weather conditions. In July, temperatures range from a comfortable 14°C (57°F) at night to a hot 34°C (94°F) during the day, accompanied by significant humidity at 67%. The month sees about 115 mm (4.5 in) of precipitation over approximately 12 days, making it a lively summer month. In stark contrast, December experiences much colder temperatures, with a minimum of -16°C (3°F) and a maximum of 17°C (62°F), averaging just 2°C (36°F). This winter month receives slightly more precipitation at 124 mm (4.9 in) over around 10 days, while humidity levels rise to 81%. For more detailed information on Boston's chilly December weather, check out Boston weather in December.
As Boston basks in the warmth of July, the weather truly sets itself apart from the cooler months of the year. With average temperatures soaring to a pleasant 23°C (73°F), residents and visitors alike are greeted with longer days and ample sunshine. However, occasional rainfall—averaging 115 mm over about 12 days—adds a refreshing twist to summer activities, while humidity levels hover around 67%, giving the city a tropical flair. This blend of warmth, rain, and humidity makes July an ideal month for enjoying outdoor festivals and exploring the vibrant local scene. For more insights into what to expect throughout the year, visit Boston Climate.