Grand Canyon National Park
Arizona, USA
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
Grand Canyon National Park, AZ

A stunning aerial panorama on the famed Horseshoe bend at the iconic Grand Canyon National Park
A stunning aerial panorama on the famed Horseshoe bend at the iconic Grand Canyon National Park
July is the hottest month of the year, with an average high temperature of 106°F (41.1°C) in the canyon region. The sun blazes the trails as visitors find respite on the river waters or the elevations of the Rims.
Thunderstorms are frequent in July, and there is a severe risk of lightning strikes and flash floods. Storms are variable in level and intensity and can reach severe levels, sometimes even culminating into tornadoes.
Keep an eye on the weather, carry plenty of water, and stay near the core park areas, as the rest of the landscape is desolate and arid.

What is the warmest month in Grand Canyon National Park?

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

What is the temperature in July in Grand Canyon National Park?

In July, in Grand Canyon National Park, the average high-temperature is 104°F (40°C), and the average low-temperature is 73.9°F (23.3°C).

How many days does it rain in July in Grand Canyon National Park?

In July, in Grand Canyon National Park, the rain falls for 3 days. Throughout July, 0.9" (23.2mm) of precipitation is accumulated.

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

In July, the average length of the day in Grand Canyon National Park is 14.3h.

How many hours of sunshine does Grand Canyon National Park have in July?

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

What is the month with the highest UV index in Grand Canyon National Park?

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

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

The average daily maximum UV index in July in Grand Canyon National Park is 11. A UV Index reading of 11, and higher, represents an extreme health threat from unsafe exposure to the Sun's UV rays.
Average temperature in July - Grand Canyon National Park, AZ
  • Average high temperature in July: 104°F

The warmest month (with the highest average high temperature) is July (104°F).
Months with the lowest average high temperature are January and December (55°F).

  • Average low temperature in July: 74°F

The month with the highest average low temperature is July (74°F).
The coldest month (with the lowest average low temperature) is January (35°F).

Average rainfall in July - Grand Canyon National Park, AZ
  • Average rainfall in July: 0.9"

The wettest month (with the highest rainfall) is August (1.5").
The driest month (with the lowest rainfall) is June (0.2").

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 lowest number of rainy days are May and June (1 days).

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

Months with the highest snowfall are January and December (0.1").
Months with the lowest snowfall are February, March, April, May, June, July, August, September, October and November (0").

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 shortest days is December (Average daylight: 9.7h).

  • Average sunshine in July: 11h

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

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).