Grand Canyon Weather

Information on the Grand Canyon weather presented below indicates approximate or expected temperatures to help visitors get prepared for their trips. However, daytime temperatures can fluctuate quite a bit regardless of the season/month. Although we have listed average temperatures and descriptions below, mother nature is unpredictable. Monsoon season weather (mid-July-August) for example, can see 10-20 degree shifts in temperature within a short period of time so having proper clothing and rain gear is very important. Temperatures are cooler in the east in (Lees Ferry – river mile 0) and warm as you travel west (Lake Mead – river mile 280).  Those who are hiking the bright angel trail, keep in mind that the temperature at the top of the south rim is usually about 20 degrees cooler than at the bottom.

April

Grand Canyon Weather in April

82

High

56

Low

0.47

Rainfall

Temperatures during the day between 70-85 degrees and temperatures at night can be in the 50’s. Ideal daytime temperatures for extended hikes however can be chilly early morning especially if rafting through a rapid first thing. Long-sleeve/underwear, proper rain gear, fleece and warm socks is a must for trips in April.

May

weather-icon

92

High

63

Low

0.36

Rainfall

Daytime temperatures can vary between 80-95 degrees, and very comfortable sleeping temperatures between mid 50’s to mid 60’s. Again, a rapid first thing in the morning before the sun rises past the canyon walls, or cloudy periods after a rapid can make things rather chilly. Long-sleeve/underwear, proper rain gear, fleece and warm socks is recommended.

June

weather-icon

101

High

72

Low

0.30

Rainfall

Temperatures begin rising and you can expect 90’s to over 100 degrees. Humidity is low and this helps, but June offers the least amount of cloud coverage so this can ‘feel’ as the hottest month even if the temperatures aren’t as high as July and August. Sleeping temperatures can be between 70-80 degrees.

July

weather-icon

106

High

78

Low

0.84

Rainfall

Daytime temperatures over 100 degrees, and nighttime temperatures between 75-80 degrees. By mid-July expect more cloud coverage and is the beginning of monsoon season where you can anticipate late afternoon thunderstorms (usually do not last very long) and clear skies by nightfall. The clouds and rainfall can offer relief from the high temperatures.

August

weather-icon

103

High

75

Low

1.40

Rainfall

Temperatures still in the 100’s during the day and you can still expect some relief and cooler temperatures from late afternoon thunderstorms. Monsoon season begins tailing off towards the end of August however you can still anticipate hot temperatures throughout. Sleeping temperatures between 70-80 degrees.

September

weather-icon

97

High

69

Low

0.97

Rainfall

Things begin cooling down again with temperatures in the mid-90’s during the day and 65-70 degrees at night. Occasional late season monsoon weather can call for some late afternoon thunderstorms early in September, but are rare.

October

weather-icon

84

High

59

Low

0.65

Rainfall 

Temperatures continue to cool as you can expect temperatures similar to April, with sleeping temperatures between 50-60 and daytime in the mid 80’s making for ideal hiking conditions. Expect cool mornings and be prepared with long-sleeve/underwear, proper rain gear, fleece and warm socks.

 

The Ultimate Guide to Grand Canyon Weather

The Grand Canyon is one of the most popular vacation destinations for people all over the world. Every year, millions of people travel to Arizona to see this majestic canyon. There is a wide range of activities for the young and old. You can hike and camp out in the back country of the canyon, or you can join a tour group and take a leisure sightseeing tour of the most picturesque spots. However, regardless of your itinerary, we recommend making a bit of planning in advance to get prepared for the Grand Canyon weather. Keep in mind that choosing the right time to visit based on your expectations and abilities is important in order to fully enjoy and appreciate your surroundings.

Spring

Many people like to visit Grand Canyon in the spring because the weather is mild and the air is crisp. During the day at the top of the South Rim, the weather at Grand Canyon ranges between 55 to 65 degrees Fahrenheit. Temperature can drop quickly after the sun sets. Night time temperatures can be chilly, dropping between 20 to 30 degrees and much of this is due to the elevation in Grand Canyon Village being 6,804 ft. When that sun is out during the day, it can seem like summer however the nights still have signs of winter in them. There can be seasonal storms therefore it is advisable to bring along a warm, waterproof jacket if you decide to visit in the spring. When comparing temperatures at the bottom during Grand Canyon raft trips, you can estimate about a 20 degree temperature fluctuation, so somewhere between 80 degrees Fahrenheit to a low near 50 degrees.

Summer

Summer time can get very crowded as this is the peak tourist season. The South Rim is popular because not only are children and students on break from school, but the temperatures are quite pleasant, ranging from 50 to 80 degrees. This is comfortable considering summer temperatures in Arizona can reach triple digits. For example on a Colorado River Trip in the Grand Canyon, some of these trips require a 10 mile hike down to the river from the South Rim. This hike has a five thousand feet elevation drop, and the temperature can and does rise above 100 degrees. If you prefer cooler temperatures, the North Rim is a bit cooler. The elevation is higher yet compared to the South Rim, and in turn the air is cooler. Just remember that any attempts to hike down during the summer should be done early in the day to avoid the extreme temperatures at midday. For example, on partial Grand Canyon raft trips, these hikes begin at 4:45am when it's dark out to avoid the excessive heat which occurs later in the day. There can also be summer thunderstorms. The "monsoon season" is typically from mid-June to mid-September.  Monsoon rains generally occur between July and August. Being at the bottom of the canyon on a rafting trip is a special treat during this season for a couple of reasons; the surprise natural waterfalls which occur after a heavy and short downpour of rain, as well as the cooling effects of the rain, bringing some relief to rafters who are down there during these months.

Autumn

Weather in Grand Canyon in autumn brings wonderful cooler temperatures, which hikers particularly like. At the bottom of the canyon, rafters enjoy cooler temperatures beginning in September through October when the season finishes. The bottom of the canyon cools down to 60 to 70 degrees at night, and 80-90's during the day, shave off another 5 degrees or so in October, a big difference from the triple-digit summer heat. For comparison, April is similar to October and May is similar to September from a temperature standpoint on river trips.  At the top of the south rim in Grand Canyon Village, From mid-september to mid-November, the weather is dryer. Temperature around the rims can approach freezing in the early morning hours, but the day does warm up after sunrise. Due to winter storms and heavy snow, the North Rim closes after the middle of October.

Winter

A lot of people like to visit the Grand Canyon during the winter time. There are fewer crowds, no scorching heat, and great accommodations can be booked at a discount. The South Rim is open during the winter, but snow may force some roads to be closed. Sometimes a thick fog can obscure the magnificent view of the canyon. However, if the weather conditions are in your favor, the fog will lift and reveal the breathtaking views. Grand Canyon weather can change quickly. Therefore, always be prepared when you plan to venture out to the rim or go rafting. Check with the National Park Service for the latest weather conditions. Bring along a rain poncho for those unexpected thunderstorms. When you are prepared, you will have a wonderful time at Grand Canyon regardless of what the weather is like. Click here for accurate real-time weather at the bottom of Grand Canyon recorded at Phantom Ranch. For real-time weather at the south rim Grand Canyon Village. 

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