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April Weather in Boulder City, United States

Last updated: June 24, 2025

In April, the average temperature in Boulder City, United States hovers around 22°C (71°F). Expect a range where it can dip to a cool 8°C (46°F) and soar up to a hot 37°C (100°F). With an average humidity of 58%, you'll find the air fairly comfortable. Just a light drizzle might occur, bringing about 5 mm (0.2 in) of precipitation over 1 day.

April Temperature in Boulder City

In April in Boulder City, the average temperature is 22°C (71°F), with maximums reaching up to 37°C (100°F) and minimums dipping as low as 8°C (46°F). This makes Boulder City an ideal destination for travelers seeking mild weather with the possibility of warmer days.

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

The chart illustrates April 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, April typically has an average temperature of 22°C (71°F), with highs reaching up to 37°C (100°F) and lows dropping to around 8°C (46°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.

April Precipitation in Boulder City

In Boulder City in April, the precipitation amount is 5 mm (0.2 in) over a duration of 1 day.

April Precipitation Trends in Boulder City

The chart displays monthly precipitation patterns in Boulder City, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Boulder City, April typically receives around 5 mm (0.2 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec2122205611811581916
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Boulder City

In Boulder City in April, humidity is 58%. With an average temperature of 22°C (71°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls and outdoor activities, but travelers should stay hydrated to fully enjoy the experience.

April Average Humidity in Boulder City

This chart illustrates the average monthly humidity levels in Boulder City, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Boulder City is approximately 58%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Boulder City

In Boulder City in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Boulder City.

Maximum UV Index Levels in Boulder City for April

The chart shows the monthly maximum UV Index (UVI) for Boulder City in April, 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 April, the maximum UV index in Boulder City typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110753
Data source: Boulder City April 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 April 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 April’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 April’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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