July Weather in Greenwich, United States

Last updated: June 24, 2025

In Greenwich, United States, the average temperature in July hovers around 24°C (75°F). You can expect a comfortable range, with minimums dipping to 12°C (54°F) and maximums peaking at 33°C (91°F). Be prepared for some rain as well, with 128 mm (5.0 in) of precipitation spread over 14 days. With an average humidity of 81%, it’s a month where the air feels pleasantly warm and lush.

July Temperature in Greenwich

In July in Greenwich, the average temperature is 24°C (75°F). Maximums can reach 33°C (91°F), while minimums can dip as low as 12°C (54°F). This pleasant climate makes Greenwich an ideal destination for travelers seeking a comfortable escape.

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. In Greenwich, July typically has an average temperature of 24°C (75°F), with highs reaching up to 33°C (91°F) and lows dropping to around 12°C (54°F).

Data source: Temperature data for Greenwich generated using information from the Copernicus Climate Change Service.

July Precipitation in Greenwich

In Greenwich in July, the precipitation amount is 128 mm (5.0 in) over a span of 14 days.

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. In Greenwich, July typically receives around 128 mm (5.0 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

July Humidity in Greenwich

In Greenwich in July humidity is 81%. With an average temperature of 24°C (75°F), this humidity feels like a warm, thick blanket enveloping you, making traveling a bit sticky and sweaty, yet still inviting for those who enjoy the rich, tropical atmosphere.

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, helping you understand how conditions vary by season. In July, average humidity in Greenwich is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Greenwich

In Greenwich in July, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Greenwich.

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. In July, the maximum UV index in Greenwich typically reaches 10, which falls under the very high exposure category.

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.

How July Weather in Greenwich Compares to Other Months

Weather in Greenwich varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Greenwich, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Greenwich, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	78 mm (3.1 inches)	88%	moderate
February Weather	0°C (32°F)	92 mm (3.6 inches)	87%	moderate
March Weather	4°C (40°F)	97 mm (3.8 inches)	87%	high
April Weather	10°C (50°F)	123 mm (4.8 inches)	87%	very high
May Weather	16°C (62°F)	129 mm (5.1 inches)	81%	very high
June Weather	21°C (71°F)	136 mm (5.4 inches)	82%	very high
July Weather	24°C (75°F)	128 mm (5.0 inches)	81%	very high
August Weather	22°C (72°F)	91 mm (3.6 inches)	78%	very high
September Weather	20°C (67°F)	79 mm (3.1 inches)	78%	very high
October Weather	14°C (57°F)	96 mm (3.8 inches)	82%	high
November Weather	5°C (41°F)	88 mm (3.4 inches)	89%	moderate
December Weather	1°C (35°F)	84 mm (3.3 inches)	86%	low