July weather forecast
Grand Canyon National Park, AZ

The famed Horseshoe bend at the iconic Grand Canyon National Park, Arizona
The famed Horseshoe bend at the iconic Grand Canyon National Park, Arizona

Weather in July

July in Grand Canyon National Park, Arizona, is a blistering summer month, with temperature in the range of an average high of 104°F (40°C) and an average low of 73.9°F (23.3°C).

Temperature

With an average high-temperature of 104°F (40°C) and an average low-temperature of 73.9°F (23.3°C), July is the warmest month.

Rainfall

In Grand Canyon National Park, Arizona, in July, during 3 rainfall days, 0.91" (23.2mm) of precipitation is typically accumulated. In Grand Canyon National Park, during the entire year, the rain falls for 33 days and collects up to 9.68" (245.9mm) of precipitation.

Snowfall

February through November are months without snowfall in Grand Canyon National Park.

Daylight

The average length of the day in July is 14.3h.

Sunshine

In July, the average sunshine in Grand Canyon National Park is 11h.

UV index

June and July, with an average maximum UV index of 11, are months with the highest UV index. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 11 transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.
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FAQ

What is the warmest month in Grand Canyon National Park?

The warmest month in Grand Canyon National Park, Arizona, is July, with an average high-temperature of 104°F (40°C) and an average low-temperature of 73.9°F (23.3°C).

How much does it rain in Grand Canyon National Park in July?

In Grand Canyon National Park, Arizona, in July, it is raining for 3 days, with typically 0.91" (23.2mm) of accumulated precipitation.

When it does not snow in Grand Canyon National Park?

February through November are months without snowfall in Grand Canyon National Park, Arizona.

What is the average length of the day in July in Grand Canyon National Park?

The average length of the day in July is 14.3h.

How long on average sun shines in July in Grand Canyon National Park?

In July, the average sunshine in Grand Canyon National Park is 11h.

What are the months with the highest UV index in Grand Canyon National Park?

Months with the highest UV index are June and July, with an average maximum UV index of 11.

What is the UV index reading in July in Grand Canyon National Park?

In Grand Canyon National Park, Arizona, the average daily maximum UV index in July is 11. A UV Index estimate of 11, and higher, represents an excessive health risk from unsafe exposure to the Sun's UV rays.

Average temperature in July
Grand Canyon National Park, AZ

Average temperature in July - Grand Canyon National Park, AZ
  • Average high temperature in July: 40°C

The warmest month (with the highest average high temperature) is July (40°C).
Months with the lowest average high temperature are January and December (12.8°C).

  • Average low temperature in July: 23.3°C

The month with the highest average low temperature is July (23.3°C).
The coldest month (with the lowest average low temperature) is January (1.7°C).

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Average rainfall in July
Grand Canyon National Park, AZ

Average rainfall in July - Grand Canyon National Park, AZ
  • Average rainfall in July: 23.2mm

The wettest month (with the highest rainfall) is August (36.9mm).
The driest month (with the least rainfall) is June (5.5mm).

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Average rainfall days in July
Grand Canyon National Park, AZ

Average rainfall days in July - Grand Canyon National Park, AZ
  • Average rainfall days in July: 3 days

The month with the highest number of rainy days is August (5 days).
Months with the least rainy days are May and June (1 days).

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Average snowfall in July
Grand Canyon National Park, AZ

Average snowfall in July - Grand Canyon National Park, AZ
  • Average snowfall in July: 0mm

The month with the highest snowfall is January (3.8mm).
Months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0mm).

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Average daylight in July /
Average sunshine in July
Grand Canyon National Park, AZ

Average daylight in July / Average sunshine in July - Grand Canyon National Park, AZ
  • Average daylight in July: 14.3h

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in July: 11h

The month with the most sunshine is June (Average sunshine: 13h).
Months with the least sunshine are January and December (Average sunshine: 7).

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Average UV index in July
Grand Canyon National Park, AZ

Average UV index in July - Grand Canyon National Park, AZ
  • Average UV index in July: 11

Months with the highest UV index are June and July (UV index 11).
The month with the lowest UV index is December (UV index 2).

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