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August Weather in Arlington, United States

Last updated: June 24, 2025

In Arlington, United States, the average temperature in August is a warm 28°C (82°F). While the mercury can dip to a minimum of 18°C (65°F), it can soar to a sweltering 37°C (99°F). Expect around 123 mm (4.8 in) of precipitation over 18 days, accompanied by an average humidity of 79%.

August Temperature in Arlington

In August in Arlington, the average temperature is 28°C (82°F), with maximums that can reach 37°C (99°F) and minimums that can drop as low as 18°C (65°F). This pleasant weather makes it an ideal time for travelers to explore and enjoy outdoor activities.

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

The chart illustrates August temperature patterns in Arlington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arlington, August typically has an average temperature of 28°C (82°F), with highs reaching up to 37°C (99°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec515762677580828279725854
Data source: Temperature data for Arlington 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 Arlington

In Arlington in August, the precipitation amount is 123 mm (4.8 in) spread over 18 days.

August Precipitation Trends in Arlington

The chart displays monthly precipitation patterns in Arlington, 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 Arlington, August typically receives around 123 mm (4.8 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec8811485113891031191231159849125
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Arlington

In Arlington in August humidity is 79%. With an average temperature of 28°C (82°F), this humidity feels like a warm blanket wrapping around you, making outdoor exploration more strenuous and requiring frequent breaks for hydration.

August Average Humidity in Arlington

This chart illustrates the average monthly humidity levels in Arlington, 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 Arlington is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%80%76%73%74%80%79%83%77%84%88%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Arlington

In Arlington in August, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Arlington.

Maximum UV Index Levels in Arlington for August

The chart shows the monthly maximum UV Index (UVI) for Arlington 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 Arlington typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589101111111110864
Data source: Arlington 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 Arlington Compares to Other Months

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

This table compares monthly weather conditions in Arlington, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)88 mm (3.5 inches)85%moderate
February Weather14°C (58°F)114 mm (4.5 inches)82%very high
March Weather17°C (62°F)85 mm (3.3 inches)80%very high
April Weather19°C (67°F)113 mm (4.4 inches)76%very high
May Weather24°C (75°F)89 mm (3.5 inches)73%extreme
June Weather26°C (80°F)103 mm (4.0 inches)74%extreme
July Weather28°C (82°F)119 mm (4.7 inches)80%extreme
August Weather28°C (82°F)123 mm (4.8 inches)79%extreme
September Weather26°C (79°F)115 mm (4.5 inches)83%very high
October Weather22°C (72°F)98 mm (3.9 inches)77%very high
November Weather15°C (59°F)49 mm (1.9 inches)84%high
December Weather12°C (54°F)125 mm (4.9 inches)88%moderate

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