July Weather in Barstow, United States

Last updated: June 24, 2025

In Barstow, United States, the average temperature in July reaches a warm 31°C (89°F), with a comfortable minimum of 17°C (63°F) and a sweltering maximum of 45°C (113°F). Expect a slight chance of rain, with a total precipitation amount of 3 mm (0.1 in) falling over just 1 day. The air stays relatively dry, with an average humidity of 29%. Enjoy the warmth!

July Temperature in Barstow

In July in Barstow, the average temperature is 31°C (89°F), with maximums reaching up to 45°C (113°F) and minimums dropping as low as 17°C (63°F). For travelers, this means it's essential to pack for both the heat of the day and the cooler evenings.

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

The chart illustrates July temperature patterns in Barstow, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barstow, July typically has an average temperature of 31°C (89°F), with highs reaching up to 45°C (113°F) and lows dropping to around 17°C (63°F).

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

July Precipitation in Barstow

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

July Precipitation Trends in Barstow

The chart displays monthly precipitation patterns in Barstow, 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 Barstow, 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 Barstow

In Barstow in July, humidity is 29%. With an average temperature of 31°C (89°F), this humidity feels like a warm embrace, making outdoor exploration quite pleasant, though it's advisable to stay hydrated and take breaks in the shade.

July Average Humidity in Barstow

This chart illustrates the average monthly humidity levels in Barstow, 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 Barstow is approximately 29%, 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 Barstow

In Barstow in July, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Barstow.

Maximum UV Index Levels in Barstow for July

The chart shows the monthly maximum UV Index (UVI) for Barstow 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 Barstow typically reaches 12, which falls under the extreme exposure category.

Data source: Barstow 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 Barstow Compares to Other Months

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

This table compares monthly weather conditions in Barstow, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	22 mm (0.9 inches)	76%	moderate
February Weather	11°C (51°F)	13 mm (0.5 inches)	80%	high
March Weather	14°C (57°F)	17 mm (0.7 inches)	69%	very high
April Weather	18°C (65°F)	11 mm (0.4 inches)	57%	very high
May Weather	22°C (71°F)	3 mm (0.1 inches)	45%	extreme
June Weather	28°C (83°F)	1 mm (0.0 inches)	34%	extreme
July Weather	31°C (89°F)	3 mm (0.1 inches)	29%	extreme
August Weather	31°C (88°F)	1 mm (0.0 inches)	28%	extreme
September Weather	27°C (80°F)	1 mm (0.0 inches)	41%	very high
October Weather	19°C (67°F)	2 mm (0.1 inches)	54%	very high
November Weather	14°C (57°F)	6 mm (0.2 inches)	68%	moderate
December Weather	8°C (47°F)	19 mm (0.7 inches)	75%	moderate