July Weather in Greenwich, United States

Last updated: February 24, 2025

In July, Greenwich, United States, experiences warm summer weather characterized by maximum temperatures reaching 35°C (96°F) and an average of 25°C (77°F). Visitors can expect a comfortable range, with minimum temperatures dipping to 16°C (60°F) during the nights. Despite the warmth, the month is marked by 143 mm (5.6 in) of precipitation over 13 days, contributing to a humidity level of 62%. This blend of warmth and moisture ensures a lush, vibrant environment, perfect for outdoor summer activities.

July Temperature in Greenwich

In Greenwich, United States, July marks the height of summer, delivering warm temperatures that invite outdoor activities and sun-soaked relaxation. With minimums averaging around 16°C (60°F) and delightful averages of 25°C (77°F), residents and visitors alike bask in the warmth of the season. The month can peak with highs reaching an exhilarating 35°C (96°F), creating a vibrant atmosphere perfect for picnics and beach outings. Following the heat of June, where temperatures already begin to soar, July maintains a consistent warmth that hints at a broader trend of rising summer temperatures. As the summer progresses, both the minimum and maximum temperatures during this month reflect a stark contrast to the chilly depths of winter, showcasing the inviting charm of a Greenwich summer.

July Weather in Greenwich: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Greenwich, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec333541506171777569594637
Data source: Temperature data for Greenwich 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.

July Precipitation in Greenwich

In July, Greenwich experiences a notable spike in precipitation, with rainfall measuring 143 mm (5.6 in) over 13 days—making it one of the wettest months of the year. This increase is particularly striking when compared to the previous month, June, which received 91 mm (3.6 in) of rain over the same number of days. The pattern of elevated rainfall continues into August, hinting at a seasonal trend of summer storms that bring both challenges and freshness to the region. With temperatures rising, these summer showers play a crucial role in nourishing the lush greenery characteristic of Greenwich, while also serving as a reminder of the region's varied weather throughout the year.

July Precipitation Trends in Greenwich

The chart displays monthly precipitation patterns in Greenwich, with values for each month alongside July's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec6910193114114911431239813286111
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Greenwich

As summer unfolds in Greenwich, July brings a notable drop in humidity levels, settling at 62%—the lowest point of the year. This decrease is part of a larger trend, as humidity begins to wane significantly from the peak levels in the winter months, where it hovers around 84% in January and gradually decreases to 69% by June. The summer heat seems to shift the atmosphere, creating a more comfortable environment that can be enjoyed before the humidity begins to creep back up in late summer, with 65% recorded in August. Overall, July serves as a refreshing midpoint in the year, offering a reprieve from the heavy humidity characteristic of earlier months.

July Average Humidity in Greenwich

This chart illustrates the average monthly humidity levels in Greenwich, with July's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how July's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Greenwich

In July, Greenwich experiences a UV Index of 9, categorizing it within the very high exposure range. This indicates that sunburn can occur within just 15 minutes of unprotected skin exposure, underscoring the importance of sun safety through protective clothing and sunscreen. Notably, July's UV levels slightly decrease from June's peak of 10 but remain consistent with August's rating, showcasing a trend of high UV exposure during the summer months. As residents and visitors enjoy outdoor activities, awareness of the UV Index is crucial for maintaining skin health. For more detailed insights, check the Greenwich UV Index.

Maximum UV Index Levels in Greenwich for July

The chart shows the monthly maximum UV Index (UVI) for Greenwich in July, 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.
JanFebMarAprMayJunJulAugSepOctNovDec35681010998642
Data source: Greenwich July 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.

July Sunshine in Greenwich

July shines as the pinnacle of sunlight in Greenwich, United States, with a remarkable 339 hours bathing the summer days in radiance. Following a steady ascent from 149 hours in January, the sunshine hours dramatically accumulate through the spring months, culminating in June's 313 hours. This upward trend peaks in July, showcasing the longest days of the year, before slowly tapering off in August as the sun begins its descent, offering 315 hours. Comparatively, the transition into fall sees a gradual decline, with September bringing in 278 hours. Overall, the warm embrace of July's sunlight not only captures the essence of summer but also highlights the seasonal rhythm of Greenwich, where longer days invite outdoor adventures and vibrant community connections.

Monthly Sunshine Duration in Greenwich: July Highlighted

The July sunshine duration represents the total number of hours Greenwich experiences direct sunlight during the month of July, excluding cloudy or obstructed periods. This chart compares the sunshine duration of July with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec149h177h252h241h275h313h339h315h278h218h207h174h
Data source: Greenwich July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Greenwich During July

In Greenwich, the likelihood of sunny weather in July hovers around 41%, reflecting a trend of variability throughout the year. This figure aligns closely with June's 39%, suggesting that summer doesn’t consistently guarantee clear skies. Contrasting with the more promising prospects of March at 56% and the sunnier November at 55%, July’s sunshine potential seems somewhat muted by the less favorable conditions of the preceding months. As you plan your summer activities, it’s wise to keep in mind that while July does offer sunny opportunities, it’s not among the sunniest months, with August dipping further to a mere 29% chance of sun. Overall, while you may enjoy some sunny days, prepare for a mix of weather as you bask in the heart of summer.

Percentage of Sunny Days in July in Greenwich

The chart illustrates the percentage of sunny days in Greenwich throughout the year, with July 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 Greenwich experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec49%31%57%45%41%40%41%29%44%38%55%31%
Data source: Greenwich July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Greenwich in July

In Greenwich, United States, July sees a delightful balance in daylight, with approximately 14 hours of sunlight gracing each day. This marks a gentle decline from the peak of 15 hours reached in June, as summer unfolds. Interestingly, July stands as a transitional month; while it retains the warmth of summer, the days gradually begin to shorten. As the year progresses, daylight hours begin to wane, dropping to 13 hours in August and further decreasing as autumn approaches. This pattern highlights a natural ebb and flow in daylight duration, inviting residents and visitors alike to make the most of the remaining summer sun.

Average Daylight Hours in Greenwich for July

The chart illustrates the variation in daylight duration in Greenwich throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 35m10h 38m11h 58m13h 20m14h 29m15h 4m14h 45m13h 43m12h 24m11h 3m9h 51m9h 15m
Data source: Greenwich daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Greenwich

In July, Greenwich experiences its calmest winds of the year, with an average speed of just 2.5 m/s (6 mph). This gently breezy summer month marks a notable decrease from the spring, where wind speeds hovered around 3.2 to 3.6 m/s. As the warmest month approaches its peak, the tranquil air provides a perfect backdrop for outdoor activities, contrasting sharply with the typical hustle of earlier in the year. Following July, wind speeds are predicted to continue their decline into August, highlighting a seasonal trend toward more serene conditions. Overall, the gradual drop in wind speed throughout the summer paints a picture of a peaceful retreat, where the soft summer breeze invites relaxation and enjoyment of the lush surroundings.

Average July Wind Speed in Greenwich

The chart displays monthly wind speed patterns in Greenwich, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.53.33.63.23.12.62.5 m/s2.43.03.13.03.0
Data source: Greenwich July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Greenwich Compares to Other Months

The weather in Greenwich 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 Greenwich and find detailed weather information for every month.

July and January present stark contrasts in weather, reflecting the seasonal extremes. In July, temperatures range from a mild 16°C (60°F) at night to a scorching 35°C (96°F) during the day, with an average of 25°C (77°F). The month is characterized by high humidity levels at 62% and frequent summer showers, accumulating 143 mm (5.6 in) over approximately 13 days.

In contrast, January is marked by frigid conditions, with temperatures plunging to a minimum of -18°C (0°F) and reaching a maximum of just 18°C (64°F). The average temperature rests at a chilling 0°C (33°F). Precipitation is significantly lower during this month, totaling 69 mm (2.7 in) over about 8 days, but humidity is notably higher at 84%. For more detailed insights about January weather, you can refer to Greenwich weather in January.

July and February present stark contrasts in weather patterns. In July, temperatures range from a minimum of 16°C (60°F) to a maximum of 35°C (96°F), accompanied by an average of 25°C (77°F). This summer month experiences higher humidity at 62% and considerable precipitation, with rain falling on about 13 days, totaling 143 mm (5.6 in). In contrast, February is characterized by much colder weather, with temperatures ranging from a biting -16°C (3°F) to a milder maximum of 20°C (68°F), and an average temperature of just 2°C (35°F). This winter month sees slightly less precipitation at 101 mm (4.0 in), over 11 days, and a higher humidity level of 82%. For a detailed look at February conditions, you can refer to Greenwich weather in February.

In July, the weather is significantly warmer with average temperatures around 25°C (77°F) and highs reaching up to 35°C (96°F), creating a summer atmosphere. However, it also sees considerable rainfall, with 143 mm (5.6 in) spread over 13 days, resulting in a humidity of 62%. In contrast, March experiences much chillier conditions with an average temperature of just 5°C (41°F) and a minimum of -10°C (15°F), although it can reach highs of 24°C (76°F) on warmer days. Precipitation in March is less, at 93 mm (3.7 in) across 10 days, but the humidity is higher at 81%. For a detailed look at weather conditions in March, you can visit Greenwich weather in March.

In comparing the weather of July and April, it is evident that July is significantly warmer, with average temperatures soaring to 25°C (77°F) compared to April's cooler average of 10°C (51°F). While July experiences higher highs, reaching up to 35°C (96°F), April's maximum temperature is a milder 27°C (81°F). Precipitation levels in July are also higher, with 143 mm (5.6 in) of rain over 13 days, in contrast to April's 114 mm (4.5 in) over 12 days. Interestingly, April tends to be more humid at 78%, compared to July's 62%. For a detailed look at April's weather specifics, check out Greenwich weather in April.

When comparing the weather in July and May, it's clear that July is significantly warmer with average temperatures reaching 25°C (77°F) and maximums soaring up to 35°C (96°F), while May's average sits lower at 16°C (61°F) and peaks at 31°C (89°F). Additionally, July experiences more precipitation at 143 mm (5.6 in) over 13 days, compared to May's 114 mm (4.5 in) over 12 days. Despite the warmer average temperatures in July, May has a slightly higher humidity level at 69%, compared to July's 62%. For more information about May's weather patterns, visit Greenwich weather in May.

In comparing the weather between June and July, we see a notable shift in temperatures and precipitation patterns. July experiences higher average temperatures, with a minimum of 16°C (60°F) and an average of 25°C (77°F), compared to June's minimum of 9°C (49°F) and average of 21°C (71°F). Additionally, while July's maximum temperature can reach up to 35°C (96°F), June's max is slightly lower, peaking at 34°C (93°F). Precipitation increases in July, with 143 mm (5.6 in) recorded over 13 days, whereas June sees less rainfall at 91 mm (3.6 in) over 12 days. Interestingly, humidity levels in July are slightly lower at 62%, compared to June's 69%. For a more in-depth look at June weather, you can visit Greenwich weather in June.

In comparing the weather of July and August, both months exhibit warm temperatures with July typically being slightly warmer. July experiences a minimum temperature of 16°C (60°F) and an average of 25°C (77°F), peaking at a maximum of 35°C (96°F). In contrast, August sees a minimal temperature of 15°C (59°F), with an average of 24°C (75°F) and a maximum of 34°C (93°F). While July has higher precipitation at 143 mm (5.6 in) over 13 days, August brings slightly less rainfall at 123 mm (4.8 in) across 14 days. Humidity levels also rise slightly in August to 65% compared to July's 62%. For more details on the weather in the area, check Greenwich weather in August.

In July, the weather is typically warm and humid, with average temperatures around 25°C (77°F) and highs reaching up to 35°C (96°F). The month experiences significant rainfall, totaling 143 mm (5.6 in) over about 13 days, resulting in a humidity level of 62%. In contrast, September sees cooler temperatures, with an average of 20°C (69°F) and maximums of 33°C (91°F), while minimal rainfall of 98 mm (3.8 in) occurs over 9 days. Interestingly, the humidity slightly increases to 68% during this month, creating a different feel from the sweltering summer heat. For more details on the specific weather conditions in September, check out Greenwich weather in September.

In July, the weather is characterized by warmer temperatures, with an average of 25°C (77°F) and maximum highs reaching up to 35°C (96°F). This summer month also sees significant precipitation, totaling 143 mm (5.6 in) over 13 days, coupled with a humidity level of 62%. In contrast, October experiences cooler temperatures, with an average of 15°C (60°F) and a maximum of 32°C (90°F). Although October has slightly lower precipitation at 132 mm (5.2 in) spread across 11 days, the humidity rises to 74%, giving a notably different feel to the weather. For a more detailed view of October conditions, you can refer to Greenwich weather in October.

In July, the weather is typically warm, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 35°C (96°F), resulting in an average of 25°C (77°F). This month also sees substantial rainfall, with about 143 mm (5.6 in) falling over 13 days and a humidity level of 62%. In contrast, November brings a significant drop in temperatures, with lows reaching -9°C (15°F) and an average of just 8°C (46°F), while highs can reach up to 23°C (74°F). Precipitation in November is lower at 86 mm (3.4 in) over 9 days, coupled with higher humidity at 82%. For a more detailed look at November weather, check out Greenwich weather in November.

In July, the weather is typically warm, with average temperatures around 25°C (77°F) and highs reaching up to 35°C (96°F). This month tends to be humid, with an average humidity of 62% and precipitation of 143 mm (5.6 in) falling over 13 days. In contrast, December experiences much colder conditions, with temperatures averaging just 3°C (38°F) and a maximum of 17°C (63°F). The month is notably drier in terms of precipitation, with 111 mm (4.4 in) spread across 11 days, but humidity levels are higher at 80%. For a detailed look at December weather, you can refer to Greenwich weather in December.

Compare Greenwich's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in Greenwich

In July, Greenwich experiences notably warmer temperatures compared to other months, with highs reaching a sizzling 35°C (96°F) and an average of 25°C (77°F). The increase in warmth is accompanied by a rise in humidity, creating a humid atmosphere that contrasts with the cooler, more temperate months. However, July is also characterized by significant precipitation, with about 143 mm (5.6 in) of rain over approximately 13 days, making it one of the wetter months of the year. This combination of heat and moisture results in a vibrant, lush landscape, but it’s wise to be prepared for spontaneous summer showers. For a deeper understanding of what to expect throughout the year, explore the Greenwich Climate.