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August Weather in Merrifield, United States

Last updated: June 24, 2025

In August, the average temperature in Merrifield, United States hovers around 25°C (78°F). Expect a range with minimums dipping to 15°C (59°F) and maximums reaching a scorching 37°C (99°F). During this month, the area receives about 152 mm (6.0 in) of precipitation over approximately 15 days, contributing to an average humidity of 72%—perfect for those who appreciate a warm, tropical ambiance!

August Temperature in Merrifield

In August, in Merrifield, the average temperature is 25°C (78°F). Maximums can reach 37°C (99°F), and minimums can be as low as 15°C (59°F). This pleasant weather makes it an ideal time for exploring outdoor activities and enjoying the local attractions.

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

The chart illustrates August temperature patterns in Merrifield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Merrifield, August typically has an average temperature of 25°C (78°F), with highs reaching up to 37°C (99°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec374147576775817872634841
Data source: Temperature data for Merrifield 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 Merrifield

In Merrifield in August, the precipitation amount is 152 mm (6.0 in) over the course of 15 days.

August Precipitation Trends in Merrifield

The chart displays monthly precipitation patterns in Merrifield, 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 Merrifield, August typically receives around 152 mm (6.0 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec619681102125109119152961078191
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Merrifield

In Merrifield in August humidity is 72%. With an average temperature of 25°C (78°F), this humidity feels like a warm blanket wrapping around you, making it essential to stay hydrated and take breaks in the shade while exploring.

August Average Humidity in Merrifield

This chart illustrates the average monthly humidity levels in Merrifield, 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 Merrifield is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%83%81%78%79%74%72%75%81%85%84%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Merrifield

In Merrifield 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 Merrifield.

Maximum UV Index Levels in Merrifield for August

The chart shows the monthly maximum UV Index (UVI) for Merrifield 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 Merrifield typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098753
Data source: Merrifield 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 Merrifield Compares to Other Months

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

This table compares monthly weather conditions in Merrifield, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)61 mm (2.4 inches)84%moderate
February Weather5°C (42°F)96 mm (3.8 inches)83%moderate
March Weather8°C (47°F)81 mm (3.2 inches)83%high
April Weather14°C (57°F)102 mm (4.0 inches)81%very high
May Weather19°C (67°F)125 mm (4.9 inches)78%very high
June Weather24°C (76°F)109 mm (4.3 inches)79%very high
July Weather27°C (81°F)119 mm (4.7 inches)74%very high
August Weather25°C (78°F)152 mm (6.0 inches)72%very high
September Weather22°C (72°F)96 mm (3.8 inches)75%very high
October Weather17°C (63°F)107 mm (4.2 inches)81%high
November Weather9°C (48°F)81 mm (3.2 inches)85%moderate
December Weather5°C (42°F)91 mm (3.6 inches)84%moderate

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