July Weather in Lake Forest, United States

Last updated: June 24, 2025

In July, the average temperature in Lake Forest, United States is a pleasant 23°C (73°F). However, be prepared for variations, as temperatures can dip to a minimum of 16°C (60°F) and soar up to a scorching 41°C (106°F). Rainfall is minimal, with an average precipitation of only 2 mm (0.1 in) occurring over 0 days. Humidity levels hover around a comfortable 73%, making it a lovely time to visit!

July Temperature in Lake Forest

In July in Lake Forest, the average temperature is 23°C (73°F). Maximum temperatures can reach 41°C (106°F), while the minimum can drop to as low as 16°C (60°F). Be prepared for warm days and cooler nights during your travels!

July Weather in Lake Forest: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Lake Forest, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lake Forest, July typically has an average temperature of 23°C (73°F), with highs reaching up to 41°C (106°F) and lows dropping to around 16°C (60°F).

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

July Precipitation in Lake Forest

In Lake Forest in July, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

July Precipitation Trends in Lake Forest

The chart displays monthly precipitation patterns in Lake Forest, 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 Lake Forest, July typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 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 Lake Forest

In Lake Forest in July humidity is 73%. With an average temperature of 23°C (73°F), this humidity feels like a thick blanket wrapping around you, making travel feel stifling and sticky, as every step seems to linger in the moisture-laden air.

July Average Humidity in Lake Forest

This chart illustrates the average monthly humidity levels in Lake Forest, 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 Lake Forest is approximately 73%, 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 Lake Forest

In Lake Forest in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Lake Forest.

Maximum UV Index Levels in Lake Forest for July

The chart shows the monthly maximum UV Index (UVI) for Lake Forest 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 Lake Forest typically reaches 11, which falls under the extreme exposure category.

Data source: Lake Forest 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 Lake Forest Compares to Other Months

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

This table compares monthly weather conditions in Lake Forest, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	71 mm (2.8 inches)	74%	moderate
February Weather	13°C (56°F)	60 mm (2.3 inches)	79%	high
March Weather	14°C (58°F)	68 mm (2.7 inches)	75%	very high
April Weather	17°C (62°F)	27 mm (1.1 inches)	70%	very high
May Weather	17°C (64°F)	13 mm (0.5 inches)	70%	extreme
June Weather	20°C (68°F)	1 mm (0.0 inches)	72%	extreme
July Weather	23°C (73°F)	2 mm (0.1 inches)	73%	extreme
August Weather	23°C (74°F)	2 mm (0.1 inches)	69%	very high
September Weather	22°C (72°F)	3 mm (0.1 inches)	68%	very high
October Weather	20°C (69°F)	10 mm (0.4 inches)	67%	high
November Weather	17°C (62°F)	25 mm (1.0 inches)	68%	moderate
December Weather	13°C (56°F)	74 mm (2.9 inches)	71%	moderate