July Weather in Lowell, United States

Last updated: June 24, 2025

In July, the average temperature in Lowell, United States is a pleasant 20°C (68°F). Expect a range between a cool 6°C (43°F) and a warm 36°C (98°F). During this time, you'll encounter minimal precipitation, with just 3 mm (0.1 in) falling over the course of 1 day. Don’t forget to prepare for the average humidity of 78%, making the air feel a bit more tropical!

July Temperature in Lowell

In July in Lowell, the average temperature is 20°C (68°F). The maximum can reach 36°C (98°F), and the minimum can be as low as 6°C (43°F). Be sure to pack both lightweight clothing for the warm days and a light jacket for cooler evenings while traveling.

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

The chart illustrates July temperature patterns in Lowell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lowell, July typically has an average temperature of 20°C (68°F), with highs reaching up to 36°C (98°F) and lows dropping to around 6°C (43°F).

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

July Precipitation in Lowell

In Lowell in July, the precipitation amount is 3 mm (0.1 in) over the course of 1 day.

July Precipitation Trends in Lowell

The chart displays monthly precipitation patterns in Lowell, 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 Lowell, July typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 1 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 Lowell

In Lowell in July humidity is 78%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes exploring the sights a bit sticky, so travelers should stay hydrated and take frequent breaks in the shade.

July Average Humidity in Lowell

This chart illustrates the average monthly humidity levels in Lowell, 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 Lowell is approximately 78%, 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 Lowell

In Lowell 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 Lowell.

Maximum UV Index Levels in Lowell for July

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

Data source: Lowell 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 Lowell Compares to Other Months

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

This table compares monthly weather conditions in Lowell, 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 (40°F)	189 mm (7.4 inches)	84%	low
February Weather	4°C (39°F)	241 mm (9.5 inches)	85%	moderate
March Weather	6°C (43°F)	169 mm (6.6 inches)	86%	high
April Weather	9°C (49°F)	175 mm (6.9 inches)	83%	high
May Weather	13°C (55°F)	85 mm (3.3 inches)	83%	very high
June Weather	16°C (62°F)	57 mm (2.2 inches)	83%	very high
July Weather	20°C (68°F)	3 mm (0.1 inches)	78%	very high
August Weather	20°C (69°F)	8 mm (0.3 inches)	67%	very high
September Weather	17°C (62°F)	101 mm (4.0 inches)	66%	very high
October Weather	11°C (51°F)	133 mm (5.2 inches)	77%	moderate
November Weather	7°C (45°F)	179 mm (7.1 inches)	87%	moderate
December Weather	4°C (40°F)	216 mm (8.5 inches)	87%	low