The best times to visit Grand Junction for ideal weather are
May 7th to July 1st
August 6th to October 7th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Grand Junction Travel Guide
Other Grand Junction Travel Info
Weather in Grand Junction
Average temperatures in Grand Junction vary an incredible amount. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 45th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Grand Junction, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late June where highs are regularly around 96.9°F (36.1°C) with temperatures rarely dropping below 62.5°F (16.9°C) at night.
Grand Junction Temperatures (Fahrenheit)
Grand Junction Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Grand Junction Perceived Temperature (F)
Grand Junction Perceived Temperature (C)
Average Grand Junction Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Grand Junction are March, June, and then January. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid January. For example, on the week of January 15th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid September with an average of 1 days of significant precipitation the week of September 10th.
When can you find snow in Grand Junction? Weather stations report large amounts of snow likely to be deepest around January, especially close to early December. The best time to ski (if at all) in Grand Junction is often around around December 3rd when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Grand Junction.
Snow on the Ground
The graph below shows the average snow on the ground in Grand Junction (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Grand Junction has some humid months, with some very dry months. The least humid month is June (14.7% relative humidity), and the most humid month is December (63.8%).
Wind in Grand Junction is usually calm. The windiest month is June, followed by May and April. June’s average wind speed of around 7.8 knots (8.9 MPH or 14.4 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early June where average top sustained speeds reach 19.3 knots, which is considered a fresh breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Grand Junction.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||3.9||Barely noticeable||9.8||Gentle breeze|
|Feb||5||Light breeze||12.6||Significant breeze|
|Mar||6.5||Light breeze||15.4||Gentle breeze|
|Apr||7.6||Gentle breeze||17.8||Strong breeze|
|May||7.6||Gentle breeze||17.5||Gentle breeze|
|Jun||7.8||Gentle breeze||17.7||Strong breeze|
|Jul||7.4||Gentle breeze||17.8||Gentle breeze|
|Aug||6.9||Light breeze||15.8||Significant breeze|
|Sep||6.8||Light breeze||15||Gentle breeze|
|Oct||5.7||Light breeze||13.6||Significant breeze|
|Nov||4.8||Light breeze||11.7||Gentle breeze|
|Dec||3.9||Barely noticeable||10.3||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Grand Junction?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Grand Junction, CO, US is July, followed by June and August. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Grand Junction in December. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Grand Junction Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderately cold. Highs range from 85.1°F (29.5°C) and 52.4°F (11.3°C) with warmer temperatures in the later months. Rain is rare with 1 to 3 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see moderate precipitation with 1 to 3 days of precipitation per month. June – August is the busiest season for tourism in Grand Junction, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 88.4°F (31.3°C) and 48°F (8.9°C), which will feel chilly given the humidity and wind. It rains or snows a normal amount: 2 to 3 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.
Winter (December through February)
Weather is far too cold this time of year in Grand Junction to be enjoyable for warm weather travelers. The average high during this season is between 52.4°F (11.3°C) and 31.7°F (-0.2°C). On average, it rains or snows a smalll amount: 2 to 3 times per month. These times of year are the slowest with tourists.