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United StatesThe weather in July in Boulder
It's warm in July in Boulder with an average temperature of 28°C. Temperatures this month range from a low of 25°C to a high of 29°C. At night, you can expect temperatures between 6°C and 12°C.
Looking for great weather? July is a good time to be in Boulder. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in July for Boulder, Utah. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 34°C in 2021, Boulder reached the highest temperature in July over the past 10 years. The lowest daytime temperature in this month was 16°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 17°C.
Rainfall amount
In July, there is an average of 80 mm of precipitation, spread over 12 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in July for Boulder
Click on any day in July to get detailed info about the usual weather on that day in Boulder. Check out the historical temperatures and precipitation over the past 10 years on this day.
July weather comparison
| Boulder | New York | |
|---|---|---|
| Average temperature | 28°C | 31°C |
| Max. temperature | 29°C | 33°C |
| Min. temperature | 6°C | -5°C |
| Total precipitation | 80 mm | 160 mm |
| Rainy days | 12 days | 18 days |
Start of July
The month of July starts in Boulder with hot temps, averaging around 28°C during the day and nights around 8°C.
Mid July
By mid-July, daytime temps rise to around 29°C, with nights around 10°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of July
By the end of July, the average daytime temperature in Boulder is around 28°C, while nighttime temps are about 11°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Boulder for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in July in Boulder, Utah. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in July in Boulder
Temperature in July in Boulder over the years
Precipitation charts
These charts show the average amount of precipitation in July in Boulder, Utah. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in July in Boulder
Total precipitation in July in Boulder over the years
Daily UV index in July in Boulder
This chart shows the average daily UV index in July in Boulder, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in July in Boulder
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Average weather in Boulder by month
Click on a month below to see detailed weather info for Boulder. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.