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October Weather in Arlington, United States

Last updated: June 24, 2025

In October, the average temperature in Arlington, United States is a cool 10°C (51°F), with a minimum dipping to a brisk -7°C (20°F) and a maximum reaching a pleasant 25°C (78°F). Expect around 150 mm (5.9 in) of precipitation over approximately 13 days, accompanied by an average humidity of 81%. Whether you're enjoying the crisp air or preparing for the occasional rain, be ready for a variety of weather experiences!

October Temperature in Arlington

In October in Arlington, the average temperature is 10°C (51°F). Maximum temperatures can reach 25°C (78°F), while minimums can drop as low as -7°C (20°F). Be prepared for a wide range of weather and pack accordingly for your trip!

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

The chart illustrates October 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, October typically has an average temperature of 10°C (51°F), with highs reaching up to 25°C (78°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec232632445665716962513628
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.

October Precipitation in Arlington

In Arlington in October, the precipitation amount is 150 mm (5.9 in) spread over 13 days.

October Precipitation Trends in Arlington

The chart displays monthly precipitation patterns in Arlington, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Arlington, October typically receives around 150 mm (5.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec8310088131102871209396150113108
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Arlington

In Arlington in October humidity is 81%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and forcing you to seek shelter more often than not.

October Average Humidity in Arlington

This chart illustrates the average monthly humidity levels in Arlington, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Arlington is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%84%76%72%67%64%72%81%87%85%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Arlington

In Arlington in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Arlington, you can refer to this Hourly UV Index in Arlington.

Maximum UV Index Levels in Arlington for October

The chart shows the monthly maximum UV Index (UVI) for Arlington in October, 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 October, the maximum UV index in Arlington typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997632
Data source: Arlington October 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 October 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 October’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 October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)83 mm (3.3 inches)89%moderate
February Weather-3°C (26°F)100 mm (3.9 inches)88%moderate
March Weather0°C (32°F)88 mm (3.5 inches)86%high
April Weather7°C (45°F)131 mm (5.2 inches)84%very high
May Weather14°C (57°F)102 mm (4.0 inches)76%very high
June Weather19°C (66°F)87 mm (3.4 inches)72%very high
July Weather22°C (71°F)120 mm (4.7 inches)66%very high
August Weather21°C (69°F)93 mm (3.7 inches)64%very high
September Weather17°C (62°F)96 mm (3.8 inches)72%high
October Weather10°C (51°F)150 mm (5.9 inches)81%high
November Weather2°C (37°F)112 mm (4.4 inches)87%moderate
December Weather-2°C (28°F)108 mm (4.2 inches)84%low

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