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Boulder weather in July (Colorado, United States of America)

Planning a trip to Boulder in July? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In July, Boulder generally has very high temperatures and moderate rainfall. July falls within the summer season. Anticipate daytime temperatures around 31°C, while night temperatures can drop to 15°C. Typically, it's the hottest month of the year. Make sure to come prepared with breezy outfits. Whether you're out exploring or just lounging, being prepared can make your experience in this warm month much more enjoyable.

Boulder in July usually receives moderate rainfall, averaging around 53 mm for the month. Based on our climate data of the past 30 years, about 13 days of rain are anticipated.

The city usually sees around 323 hours of sunlight, indicating many sunny days.

If your ideal day consists of dry skies and moderate temperatures May, June, August and September generally stand out with the best circumstances. While December tends to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Boulder climate page with graphs.

 

Boulder, monthly averages in July

Min TemperatureMin Temperature 15°C  
Max TemperatureMax Temperature 31°C  
Chance of RainChance of Rain 43%  
PrecipitationPrecipitation 53 mm  
Rainy daysRainy days 13 days  
HumidityHumidity 46% *  
SunshineSunshine 323 hours *  
Percentage SunshinePercentage Sunshine 71% *  
* Data from: Denver, the United States of America (45 KM, 28 Miles).

Where to go in the United States of America in July

Find out more about the weather in the United States of America in July and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Boulder in July?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in July.

Swimming
10/10
Cycling
8/10
Walking
8/10
Barbeque
10/10
Camping
8/10
Outdoor sports
8/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Boulder.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.