July Weather in South Lyon, United States

Last updated: June 24, 2025

In July, the average temperature in South Lyon, United States is a pleasant 23°C (74°F), making it an ideal time to explore. However, be prepared for temperature variations, with lows of 13°C (55°F) and highs reaching 34°C (94°F). Expect some rain as well, with an average precipitation of 90 mm (3.5 in) over about 11 days. Don’t forget to stay hydrated, as the average humidity hovers around a warm 80%!

July Temperature in South Lyon

In July in South Lyon, the average temperature is 23°C (74°F). The maximum can reach 34°C (94°F), and the minimum can be as low as 13°C (55°F). This pleasant range makes it an ideal time for outdoor activities and sightseeing.

July Weather in South Lyon: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in South Lyon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Lyon, July typically has an average temperature of 23°C (74°F), with highs reaching up to 34°C (94°F) and lows dropping to around 13°C (55°F).

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

July Precipitation in South Lyon

In South Lyon in July, the total precipitation amounts to 90 mm (3.5 in) over the course of 11 days.

July Precipitation Trends in South Lyon

The chart displays monthly precipitation patterns in South Lyon, 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 South Lyon, July typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

July Humidity in South Lyon

In South Lyon in July humidity is 80%. With an average temperature of 23°C (74°F), this humidity feels like walking through a warm, damp blanket, making travel feel sticky and muggy, where every step leaves you yearning for a cool breeze.

July Average Humidity in South Lyon

This chart illustrates the average monthly humidity levels in South Lyon, 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 South Lyon is approximately 80%, 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 South Lyon

In South Lyon 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 South Lyon.

Maximum UV Index Levels in South Lyon for July

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

Data source: South Lyon 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 South Lyon Compares to Other Months

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

This table compares monthly weather conditions in South Lyon, 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 (26°F)	63 mm (2.5 inches)	88%	low
February Weather	-3°C (28°F)	66 mm (2.6 inches)	87%	moderate
March Weather	3°C (37°F)	72 mm (2.8 inches)	85%	moderate
April Weather	8°C (47°F)	90 mm (3.6 inches)	86%	very high
May Weather	15°C (60°F)	111 mm (4.4 inches)	80%	very high
June Weather	21°C (70°F)	98 mm (3.9 inches)	80%	very high
July Weather	23°C (74°F)	90 mm (3.5 inches)	80%	very high
August Weather	22°C (72°F)	74 mm (2.9 inches)	80%	very high
September Weather	18°C (65°F)	73 mm (2.9 inches)	80%	high
October Weather	12°C (54°F)	104 mm (4.1 inches)	84%	moderate
November Weather	4°C (39°F)	74 mm (2.9 inches)	89%	moderate
December Weather	0°C (32°F)	54 mm (2.1 inches)	86%	low