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October Weather in McLean, United States

Last updated: June 24, 2025

In McLean, United States, the average temperature in October hovers around 14°C (57°F). Expect a range of conditions, as temperatures can dip as low as -5°C (23°F) and soar to a scorching 32°C (90°F). Be prepared for some rain, with an average precipitation of 115 mm (4.5 in) spread over about 11 days. The air tends to be quite humid, with an average humidity level of 82%, making it a unique climate experience!

October Temperature in McLean

In October in McLean, the average temperature is 14°C (57°F). Maximums can reach 32°C (90°F), while minimums can drop to -5°C (23°F). This variation in temperatures makes McLean an intriguing destination, so be sure to pack for both warm and chilly conditions!

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

The chart illustrates October temperature patterns in McLean, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McLean, October typically has an average temperature of 14°C (57°F), with highs reaching up to 32°C (90°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec283043526574777470574135
Data source: Temperature data for McLean 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 McLean

In McLean in October, the total precipitation amount is 115 mm (4.5 in) spread over 11 days.

October Precipitation Trends in McLean

The chart displays monthly precipitation patterns in McLean, 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 McLean, October typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec677012112315012311496621156554
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in McLean

In McLean in October, humidity is 82%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making outdoor activities uncomfortable and travel more challenging due to the heavy, damp air.

October Average Humidity in McLean

This chart illustrates the average monthly humidity levels in McLean, 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 McLean is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in McLean

In McLean 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 McLean, you can refer to this Hourly UV Index in McLean.

Maximum UV Index Levels in McLean for October

The chart shows the monthly maximum UV Index (UVI) for McLean 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 McLean typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111098642
Data source: McLean 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 McLean Compares to Other Months

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

This table compares monthly weather conditions in McLean, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)67 mm (2.7 inches)82%moderate
February Weather-1°C (31°F)70 mm (2.7 inches)83%moderate
March Weather6°C (43°F)121 mm (4.8 inches)84%high
April Weather11°C (52°F)123 mm (4.8 inches)85%very high
May Weather18°C (65°F)150 mm (5.9 inches)79%very high
June Weather23°C (74°F)123 mm (4.8 inches)82%extreme
July Weather25°C (77°F)114 mm (4.5 inches)80%very high
August Weather23°C (74°F)96 mm (3.8 inches)81%very high
September Weather21°C (71°F)62 mm (2.4 inches)80%very high
October Weather14°C (57°F)115 mm (4.5 inches)82%high
November Weather5°C (41°F)65 mm (2.6 inches)88%moderate
December Weather2°C (35°F)54 mm (2.1 inches)84%low

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