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August Weather in Rockville, United States

Last updated: June 24, 2025

In Rockville, United States, the average temperature in August hovers around 24°C (75°F). Visitors can expect a minimum of 12°C (53°F) and a maximum of 35°C (95°F) during this time. Rain is likely, with an average precipitation of 100 mm (3.9 in) spread across about 10 days. Additionally, the average humidity level is around 70%, creating a warm and somewhat muggy atmosphere.

August Temperature in Rockville

In August in Rockville, the average temperature is 24°C (75°F). Maximums can reach 35°C (95°F), while minimums can drop as low as 12°C (53°F). This makes Rockville an ideal destination for travelers seeking pleasant and varied weather.

August Weather in Rockville: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Rockville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rockville, August typically has an average temperature of 24°C (75°F), with highs reaching up to 35°C (95°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec303343526574777570584236
Data source: Temperature data for Rockville 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.

August Precipitation in Rockville

In Rockville in August, the precipitation amount is 100 mm (3.9 in) over a span of 10 days.

August Precipitation Trends in Rockville

The chart displays monthly precipitation patterns in Rockville, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Rockville, August typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec8488122106140113103100651188775
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Rockville

In Rockville in August, humidity is 70%. With an average temperature of 24°C (75°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities a bit sluggish and sticky, ideal for leisurely strolls but requiring plenty of hydration.

August Average Humidity in Rockville

This chart illustrates the average monthly humidity levels in Rockville, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Rockville is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Rockville

In Rockville in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Rockville.

Maximum UV Index Levels in Rockville for August

The chart shows the monthly maximum UV Index (UVI) for Rockville in August, 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 August, the maximum UV index in Rockville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Rockville August 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 August Weather in Rockville Compares to Other Months

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

This table compares monthly weather conditions in Rockville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)84 mm (3.3 inches)87%moderate
February Weather1°C (33°F)88 mm (3.5 inches)85%moderate
March Weather6°C (43°F)122 mm (4.8 inches)86%high
April Weather11°C (53°F)106 mm (4.2 inches)84%very high
May Weather18°C (65°F)140 mm (5.5 inches)79%very high
June Weather24°C (75°F)113 mm (4.5 inches)82%extreme
July Weather25°C (78°F)103 mm (4.1 inches)79%very high
August Weather24°C (75°F)100 mm (3.9 inches)70%very high
September Weather21°C (71°F)64 mm (2.5 inches)69%very high
October Weather14°C (58°F)118 mm (4.6 inches)76%high
November Weather5°C (42°F)87 mm (3.4 inches)88%moderate
December Weather2°C (36°F)75 mm (3.0 inches)87%moderate

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