July Weather in Dorchester, United States

Last updated: June 24, 2025

In July, the average temperature in Dorchester, United States hovers around 26°C (79°F). Expect minimums to dip to 13°C (56°F) while soaring to a maximum of 38°C (100°F). With an average humidity of 83%, it can feel quite humid. Be prepared for about 64 mm (2.5 in) of rainfall over 9 days during the month!

July Temperature in Dorchester

In July in Dorchester, the average temperature is 26°C (79°F). Maximums can reach 38°C (100°F) and minimums can be as low as 13°C (56°F). This variation means travelers should be prepared for both warm days and cooler nights.

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

The chart illustrates July temperature patterns in Dorchester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dorchester, July typically has an average temperature of 26°C (79°F), with highs reaching up to 38°C (100°F) and lows dropping to around 13°C (56°F).

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

July Precipitation in Dorchester

In Dorchester in July, the precipitation amount is 64 mm (2.5 in) over a span of 9 days.

July Precipitation Trends in Dorchester

The chart displays monthly precipitation patterns in Dorchester, 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 Dorchester, July typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 9 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 Dorchester

In Dorchester in July, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

July Average Humidity in Dorchester

This chart illustrates the average monthly humidity levels in Dorchester, 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 Dorchester is approximately 83%, 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 Dorchester

In Dorchester 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 Dorchester.

Maximum UV Index Levels in Dorchester for July

The chart shows the monthly maximum UV Index (UVI) for Dorchester 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 Dorchester typically reaches 10, which falls under the very high exposure category.

Data source: Dorchester 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 Dorchester Compares to Other Months

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

This table compares monthly weather conditions in Dorchester, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	32 mm (1.3 inches)	76%	moderate
February Weather	-3°C (27°F)	26 mm (1.0 inches)	80%	moderate
March Weather	6°C (42°F)	95 mm (3.7 inches)	73%	high
April Weather	11°C (51°F)	47 mm (1.8 inches)	74%	very high
May Weather	17°C (63°F)	145 mm (5.7 inches)	78%	very high
June Weather	25°C (77°F)	97 mm (3.8 inches)	82%	extreme
July Weather	26°C (79°F)	64 mm (2.5 inches)	83%	very high
August Weather	24°C (76°F)	82 mm (3.2 inches)	80%	very high
September Weather	21°C (70°F)	81 mm (3.2 inches)	75%	very high
October Weather	12°C (53°F)	110 mm (4.3 inches)	75%	high
November Weather	5°C (41°F)	27 mm (1.1 inches)	82%	moderate
December Weather	0°C (33°F)	40 mm (1.6 inches)	83%	moderate