July Weather in Acton, United States

Last updated: June 24, 2025

In July, the average temperature in Acton, United States hovers around 22°C (72°F). Be prepared for a range, as temperatures can dip to a minimum of 10°C (50°F) and soar to a maximum of 37°C (98°F). Expect about 153 mm (6.0 in) of precipitation spread over 13 days, and enjoy an average humidity level of 67%, creating a vibrant and dynamic atmosphere!

July Temperature in Acton

In July in Acton, the average temperature is 22°C (72°F). Maximum temperatures can reach 37°C (98°F), while minimums can drop as low as 10°C (50°F). Be prepared for warm days and cooler evenings when traveling during this time.

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

The chart illustrates July temperature patterns in Acton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Acton, July typically has an average temperature of 22°C (72°F), with highs reaching up to 37°C (98°F) and lows dropping to around 10°C (50°F).

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

July Precipitation in Acton

In Acton in July, the total precipitation amount is 153 mm (6.0 in) spread over 13 days.

July Precipitation Trends in Acton

The chart displays monthly precipitation patterns in Acton, 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 Acton, July typically receives around 153 mm (6.0 inches) of precipitation spread over approximately 13 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 Acton

In Acton in July humidity is 67%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, creating a tropical ambiance that can be both refreshing and slightly stifling for traveling.

July Average Humidity in Acton

This chart illustrates the average monthly humidity levels in Acton, 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 Acton is approximately 67%, 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 Acton

In Acton in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Acton.

Maximum UV Index Levels in Acton for July

The chart shows the monthly maximum UV Index (UVI) for Acton 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 Acton typically reaches 9, which falls under the very high exposure category.

Data source: Acton 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 Acton Compares to Other Months

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

This table compares monthly weather conditions in Acton, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (24°F)	79 mm (3.1 inches)	86%	moderate
February Weather	-3°C (27°F)	89 mm (3.5 inches)	84%	moderate
March Weather	1°C (33°F)	80 mm (3.2 inches)	82%	moderate
April Weather	7°C (45°F)	132 mm (5.2 inches)	80%	very high
May Weather	14°C (57°F)	77 mm (3.0 inches)	72%	very high
June Weather	19°C (67°F)	93 mm (3.7 inches)	72%	very high
July Weather	22°C (72°F)	153 mm (6.0 inches)	67%	very high
August Weather	22°C (71°F)	87 mm (3.4 inches)	66%	very high
September Weather	18°C (64°F)	73 mm (2.9 inches)	71%	high
October Weather	11°C (52°F)	126 mm (5.0 inches)	78%	moderate
November Weather	3°C (38°F)	111 mm (4.4 inches)	84%	moderate
December Weather	-2°C (29°F)	125 mm (4.9 inches)	81%	low