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July Weather in Boulder City, United States

Last updated: June 24, 2025

In July, the average temperature in Boulder City, United States soars to a sweltering 35°C (96°F). Expect extremes, with minimums dipping to 23°C (74°F) and peaks reaching a scorching 47°C (116°F). While the sun blazes, you’ll see minimal rain, with just 17 mm (0.7 in) over 4 days. Don't forget the low 27% humidity, making this heat feel even more intense!

July Temperature in Boulder City

In July in Boulder City, the average temperature is 35°C (96°F). The maximum can reach 47°C (116°F), while the minimum can be as low as 23°C (74°F). Be prepared for the intense heat and stay hydrated while exploring!

July Weather in Boulder City: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Boulder City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Boulder City, July typically has an average temperature of 35°C (96°F), with highs reaching up to 47°C (116°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec495361717891959486706049
Data source: Temperature data for Boulder City generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Boulder City

In Boulder City in July, the precipitation amount is 17 mm (0.7 in) over a span of 4 days.

July Precipitation Trends in Boulder City

The chart displays monthly precipitation patterns in Boulder City, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Boulder City, July typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec2122205611811581916
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Boulder City

In Boulder City in July, humidity is 27%. With an average temperature of 35°C (96°F), this humidity feels like a warm embrace that can make outdoor activities a bit sticky, prompting travelers to seek shade and hydration frequently while enjoying the vibrant scenery around them.

July Average Humidity in Boulder City

This chart illustrates the average monthly humidity levels in Boulder City, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Boulder City is approximately 27%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%80%68%58%45%31%27%30%48%60%70%77%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Boulder City

In Boulder City in July, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Boulder City.

Maximum UV Index Levels in Boulder City for July

The chart shows the monthly maximum UV Index (UVI) for Boulder City in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in Boulder City typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110753
Data source: Boulder City July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How July Weather in Boulder City Compares to Other Months

Weather in Boulder City varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Boulder City, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Boulder City, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)21 mm (0.8 inches)77%moderate
February Weather12°C (53°F)21 mm (0.8 inches)80%high
March Weather16°C (61°F)20 mm (0.8 inches)68%very high
April Weather22°C (71°F)5 mm (0.2 inches)58%very high
May Weather26°C (78°F)6 mm (0.2 inches)45%extreme
June Weather33°C (91°F)1 mm (0.0 inches)31%extreme
July Weather35°C (96°F)17 mm (0.7 inches)27%extreme
August Weather35°C (95°F)11 mm (0.4 inches)30%extreme
September Weather30°C (86°F)5 mm (0.2 inches)48%very high
October Weather21°C (71°F)8 mm (0.3 inches)59%high
November Weather15°C (60°F)19 mm (0.7 inches)70%moderate
December Weather10°C (50°F)15 mm (0.6 inches)77%moderate

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