July Weather in La Mesa, United States

Last updated: June 24, 2025

In July, the average temperature in La Mesa, United States hovers around 29°C (84°F), with a minimum of 18°C (64°F) and soaring up to a maximum of 41°C (107°F). Expect 34 mm (1.4 in) of precipitation spread over about 7 days, accompanied by an average humidity of 60%—perfect for those who enjoy a warm, slightly humid climate!

July Temperature in La Mesa

In July in La Mesa, the average temperature is 29°C (84°F). Maximums can reach 41°C (107°F), and minimums can be as low as 18°C (64°F). Travelers should be prepared for hot days and mild evenings.

July Weather in La Mesa: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in La Mesa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Mesa, July typically has an average temperature of 29°C (84°F), with highs reaching up to 41°C (107°F) and lows dropping to around 18°C (64°F).

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

July Precipitation in La Mesa

In La Mesa in July, the precipitation amount is 34 mm (1.4 in) over the course of 7 days.

July Precipitation Trends in La Mesa

The chart displays monthly precipitation patterns in La Mesa, 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 La Mesa, July typically receives around 34 mm (1.4 inches) of precipitation spread over approximately 7 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 La Mesa

In La Mesa in July humidity is 60%. With an average temperature of 29°C (84°F), this humidity feels like walking through a warm, enveloping blanket, making outdoor activities slightly draining yet still enjoyable if you stay hydrated and take breaks in the shade.

July Average Humidity in La Mesa

This chart illustrates the average monthly humidity levels in La Mesa, 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 La Mesa is approximately 60%, 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 La Mesa

In La Mesa in July, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in La Mesa.

Maximum UV Index Levels in La Mesa for July

The chart shows the monthly maximum UV Index (UVI) for La Mesa 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 La Mesa typically reaches 13, which falls under the extreme exposure category.

Data source: La Mesa 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 La Mesa Compares to Other Months

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

This table compares monthly weather conditions in La Mesa, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	12 mm (0.5 inches)	81%	moderate
February Weather	10°C (51°F)	13 mm (0.5 inches)	77%	high
March Weather	15°C (59°F)	17 mm (0.7 inches)	65%	very high
April Weather	20°C (68°F)	4 mm (0.1 inches)	53%	extreme
May Weather	24°C (76°F)	4 mm (0.1 inches)	51%	extreme
June Weather	29°C (84°F)	26 mm (1.0 inches)	51%	extreme
July Weather	29°C (84°F)	34 mm (1.4 inches)	60%	extreme
August Weather	28°C (83°F)	34 mm (1.4 inches)	63%	extreme
September Weather	25°C (77°F)	30 mm (1.2 inches)	74%	extreme
October Weather	19°C (67°F)	22 mm (0.9 inches)	75%	very high
November Weather	13°C (56°F)	14 mm (0.6 inches)	82%	high
December Weather	8°C (47°F)	15 mm (0.6 inches)	87%	moderate