July Weather in Grand Junction, United States

Last updated: June 24, 2025

In July, the average temperature in Grand Junction, United States hovers around 25°C (77°F). Expect daily fluctuations, with a minimum dipping to 12°C (55°F) and a maximum soaring to 36°C (97°F). During this time, the area experiences 84 mm (3.3 in) of precipitation over approximately 7 days, while humidity levels remain comfortably high at 81%.

July Temperature in Grand Junction

In July in Grand Junction, the average temperature is 25°C (77°F). Maximums can reach 36°C (97°F) and minimums can be as low as 12°C (55°F). This pleasant climate makes Grand Junction an ideal destination for travelers looking to enjoy outdoor activities and explore the local attractions.

July Weather in Grand Junction: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Grand Junction, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grand Junction, July typically has an average temperature of 25°C (77°F), with highs reaching up to 36°C (97°F) and lows dropping to around 12°C (55°F).

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

July Precipitation in Grand Junction

In Grand Junction in July, the total precipitation amount is 84 mm (3.3 in) distributed over a span of 7 days.

July Precipitation Trends in Grand Junction

The chart displays monthly precipitation patterns in Grand Junction, 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 Grand Junction, July typically receives around 84 mm (3.3 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 Grand Junction

In Grand Junction in July, humidity is 81%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, thick blanket, making traveling quite challenging as you may feel sticky and sluggish, requiring frequent breaks to stay refreshed and hydrated.

July Average Humidity in Grand Junction

This chart illustrates the average monthly humidity levels in Grand Junction, 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 Grand Junction is approximately 81%, 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 Grand Junction

In Grand Junction 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 Grand Junction.

Maximum UV Index Levels in Grand Junction for July

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

Data source: Grand Junction 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 Grand Junction Compares to Other Months

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

This table compares monthly weather conditions in Grand Junction, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	32 mm (1.3 inches)	78%	moderate
February Weather	-5°C (23°F)	39 mm (1.5 inches)	80%	moderate
March Weather	4°C (39°F)	76 mm (3.0 inches)	77%	moderate
April Weather	9°C (49°F)	66 mm (2.6 inches)	77%	very high
May Weather	17°C (62°F)	163 mm (6.4 inches)	77%	very high
June Weather	23°C (74°F)	101 mm (4.0 inches)	81%	extreme
July Weather	25°C (77°F)	84 mm (3.3 inches)	81%	very high
August Weather	23°C (74°F)	90 mm (3.5 inches)	77%	very high
September Weather	20°C (68°F)	108 mm (4.2 inches)	73%	very high
October Weather	11°C (52°F)	122 mm (4.8 inches)	75%	high
November Weather	3°C (38°F)	36 mm (1.4 inches)	85%	moderate
December Weather	-1°C (30°F)	37 mm (1.4 inches)	83%	moderate