Grand Junction (CO) Climate by Month
The climate in Grand Junction is marked by big temperature swings throughout the year.
Temperatures range from very warm during the warmest months
to cold in the cooler months.
The city sits in an arid zone with minimal moisture.
Let's now guide you through the climate details for a complete overview.
Average day and night temperature
In Grand Junction, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a very warm 34°C in July. In January, the coolest month of the year, temperatures drop to a chilly 3°C. At night, expect cooler temperatures, averaging -9°C during this month.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Grand Junction sits in an arid zone with minimal moisture, averaging 245 mm of rain/snowfall per year. Grand Junction can be quite wet during October, receiving approximately 30 mm of precipitation over 8 rainy days. In contrast June, experiences much drier conditions, with 11 mm of rainfall, spread across 3 rainy days.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
Grand Junction can be enjoyed more throughout the sunniest month of June under a blue sky, with approximately 11.9 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 6.0 hours of sunlight per day.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is low throughout the year in Grand Junction.
Relative humidity over the year
Average wind speed
The mean wind speed over the year in Grand Junction ranges from 2°C in January to 5°C in June.
The mean monthly wind speed over the year (meters per second)
The best time of year to visit Grand Junction in the United States of America
Other facts from our historical weather data: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 3°C.
October tops the wettest month list with 30 mm of rainfall.
June is the driest month with 11 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.
