Grand Junction (CO) Weather and Climate: A Comprehensive Guide
The temperature in Grand Junction can vary quite a bit throughout the year.
Temperatures can be very warm during the warmest months,
and cold during the cooler months.
It maintains fairly dry conditions year-round.
Let's now guide you through the climate details for a complete overview.
Average maximum day and minimum night temperature
Visitors to Grand Junction can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a very warm 34°C in July, the warmest time of the year, to a chilly 2°C during cooler months like January.
At night, temperatures typically drop to an average of around -9°C during these months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Grand Junction's climate is marked by below-average rain/snowfall, accumulating 255 mm of precipitation yearly. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, September receives moderate rainfall, averaging 32 mm of precipitation, recorded across 7 rainy days. In contrast, the drier season, June brings less rainfall, with 12 mm over 3 rainy days. For more details, please visit our Grand Junction Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Seasonal changes in sunshine hours are quite dramatic in Grand Junction. While June receives considerable daily sunshine with up to 11.9 hours, December marks the darkest time of the year, where sunshine is scarce with only 6.0 hours of sunlight per day. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is moderate throughout the year in Grand Junction.
The city experiences its highest humidity in January, reaching 68%. In June, the humidity drops to its lowest level at 28%. Explore our detailed page on humidity levels for further details.
Relative humidity over the year
Average wind speed
The mean wind speed varies between 2 m/s and 5 m/s throughout the year. It is lowest in January and highest during June.
The mean monthly wind speed over the year (meters per second)
overcast and rain broken clouds and no rain partly cloudy and no rainForecast for Grand Junction (CO)
3 m/s
2 m/s
3 m/s
The best time of year to visit Grand Junction in the United States of America
Other facts from our historical weather data:The hottest season / summer takes place in June, July, August and September.
Yes, the months of January, February, March, June and November are very dry.
July has an average maximum temperature of 34°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 2°C.
September tops the wettest month list with 32 mm of rainfall.
June is the driest month with 12 mm of precipitation.
June is the sunniest month with an average of 357 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
